Q: I have a 11.5” barrel, what model do I purchase for my weapon?

Asked by: Mac - 6/22/2022
A: The best way to determine fitment is to enter the dimensions of your configuration into the Configurator here: https://www.riflespeed.com/Choose-your-Gas-Control_ep_41.html

Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (6/22/2022)

Q: What are the overall dimensions of RS7519? Length/height/width. Trying to see if it will fit on a mk12 cut barrel. Thank you Tony

Asked by: Tony - 6/22/2022
A: The RS7519 is approximately 1.9" long. Additional dimensions are available under the "Fitment" tab on the Gas Control page. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (6/22/2022)

Q: I really like the idea of your gas system but I run a high temp Inconel carbine gas tube rated for 1800F and really don't want to give that up. Is there any way to make your gas control system work with a dogleg carbine length tube? This Inconel gas tube is already thicker and requires it to be installed to the gas block then slid back into the upper receiver hole to fit anyway.

Asked by: MD Froman - 6/20/2022
A: Straight gas tubes are required. Straight gas tubes are more durable than bent gas tubes and mitigate heat-related gas tube issues. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (6/21/2022)

Q: When will item RS7558 [+$10.00] be back in stock? Thanks

Asked by: Bill - 6/16/2022
A: Bill, we're roughly three weeks out on those.
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Answer provided by: Administrator (6/16/2022)

Q: Will this fit with the strike industries gridlok lite rail

Asked by: Cf94 - 6/9/2022
A: Calvin, we don't have a Gridlock handguard in the shop, but you can refer to the dimensioned drawings under the "Fitment" tab on the Gas Control page. Unless there is something unusual about the handguard, then it should be fine as long as the inside diameter is approximately 1.3 inches. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (6/14/2022)

Q: I have an LMT MRP with a 300 blackout barrel. The blackout uses the pistol length gas tube and the rail is a 9.5 inch. Would the 7558 be long enough to adjust without having to pull the barrel to reach it?

Asked by: Steven Hunt - 6/7/2022
A: Should be an easy fit, but enter your measurements into the Configurator on the "Choose Your Gas Control" page to be sure: https://www.riflespeed.com/Choose-your-Gas-Control_ep_41.html

Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (6/7/2022)

Q: Running a Daniel Defense MK18, with a BCM M-Lok hand guard. I tried using the tab to figure out which block I would need but it said nothing would fit. Wondering if I did it wrong? These look awesome and I’d love to run one for my duty rifle (police officer/SWAT).

Asked by: Joshua Sonney - 6/6/2022
A: The most common issue is handguard length.
If your handguard covers the entire barrel then you wouldn't have access to make adjustments by turning the Control Knob. With Mk18 configurations there are two options. #1 keep your 10.3"/10.5" barrel and switch to a shorter handguard. #2 keep your handguard and switch to an 11.5" barrel. With an 11.5" barrel you can run an RS7533 Gas Control. This is one of the best setups available and what we advise customers running short carbines. An 11.5" is noticeably more consistent and smoother. The extra inch of length is negligible with respect to the handling characteristics of the carbine. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (6/6/2022)

Q: Do you think a fortis night rail on a .750" gas journal will have enough clearance on this?

Asked by: Miguel - 5/27/2022
A: Miguel, most low profile handguards have plenty of clearance. We don't have a Fortis Night Rail in the shop to check, but we do have dimensioned drawings under the "Fitment" tab on the Gas Control page here at riflespeed.com that can help you determine your fitment. From what I can see on their website, the Fortis will be a great fit.
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Answer provided by: Administrator (5/27/2022)

Q: The dimples on my barrel are spaced by .40" and the set screws on this are spaced by .450", will it still securely mount to the barrel if the dimples don't align?

Asked by: Mardz - 5/27/2022
A: Tighten the rear setscrew first and then the front set screw will find its spot regardless of the previous location. For the ultimate installation check out the Barrel Pinning service.
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Answer provided by: Administrator (5/27/2022)

Q: Making sure this will work with BCM uppers. They use a set screw apparently? It's a 11.5 upper with 10 mcmr rail. Their regular bfh upper.

Asked by: Logan Bennett Wood - 5/25/2022
A: Yes. Install the rear set screw first. Once that’s tight you can install the front set screw. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (5/25/2022)

Q: Does RS7543 come with straight gas tube? Or is it sold separately? thanks

Asked by: nickolas - 5/25/2022
A: Gas tubes are sold separately. You’ll need to select the size that you need. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (5/25/2022)

Q: I want to use it on my AR 308 build. Will I need to change the plunger so it will cycle correctly for this caliber? Info for build barrel .308 win. & mid length gas system. thanks

Asked by: nickolas - 5/25/2022
A: Two Plunger sizes are included with every kit. One of those will work with your 308 (possibly both). If you have any trouble hit us up on our support email. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (5/27/2022)

Q: Hello. Seriously considering the RS7519. What is the length of the gas block and dial, end-to-end? I looked for it on your site but couldn't find it. Thank you.

Asked by: Paul - 5/20/2022
A: The RS7519 assembly length is approximately 1.9"
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Answer provided by: Administrator (5/27/2022)

Q: 1. What surface treatment is on each of the parts of the RIFLESPEED gas control system? 2. What material is the gas tube made of and what surface treatment has been applied?

Asked by: Bob - 5/18/2022
A: Machined parts are Nitride QPQ finished. Gas tubes are stainless steel. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (5/25/2022)

Q: When and will y’all make an adjustable gas block for .875 size barrel? I’m really interested in running the product on my 308 build.

Asked by: Big Los - 5/15/2022
A: The .875" models are launching this summer (2022). We don't have an exact date yet, but keep an eye on the site and our social media. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (5/16/2022)

Q: What is the min space spec for this gas block to fit under a handguard? I'm useing aero s-one and kansa handguards by kaw valley. The kansa has a 1.6 min height spec inside the handguard. Cant remember what the aero s-one handguard min height spec is at the moment. Really want to try out your companys gas block but need some size specs before purchasing.

Asked by: Clinton Andrus - 5/7/2022
A: Clinton, we have dimensioned drawings for the Gas Controls under the "Fitment" tab on the Gas Control page. I can tell you for sure that the Atlas S-One won't work, though. The lowered center section doesn't allow enough room for the gas tube or Gas Control. Check out the Cross MachineTool HDM, DRT, and UHPR rails we offer for good options or others like the Midwest Industries Combat Rail or G4. All of the Geissele rails we've tried have fit as well. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (5/7/2022)

Q: What is the gas block made of stainless or steel?

Asked by: charles catton - 5/6/2022
A: We use a combination of materials including 4140 Chromoly Vanadium, A286 Stainless Steel, 17-4 Stainless Steel, 17-7 Stainless Steel, and 6061 T6 Aluminum. All materials are selected as no-compromise choices based on the performance needs of a rugged and military grade component while keeping component weight in mind.
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Answer provided by: Administrator (5/7/2022)

Q: Will the RS7543 behind a pin and welded 14.5 unscrew far enough to disassemble and replace plungers if desired?

Asked by: Brandon Williams - 5/2/2022
A: No, you'll need to determine the Plunger you want to use before you pin & weld if using an RS7543. With an RS7533 you would have room to swap Plungers. Since Plungers outlast barrels it is generally unnecessary to change Plungers, however. Email us at [email protected] and we can help you with initial setup once you have your parts in hand. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (5/2/2022)

Q: I have a 10” barrel with pistol length gas system with 9” handguard. I stumped the configuration tool… any suggestions.

Asked by: Bob - 4/28/2022
A: The configurator is set to allow a minimum of 0.4" of exposed Control Knob. Your handguard is likely too long to allow this. Try entering different handguard lengths (select the checkbox to enter a custom measurement) and you can determine what length handguard you'd need to have adequate clearance. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (5/2/2022)

Q: Hey Guy's, Do you ever plan on making these in a .936" version?

Asked by: Sam - 4/26/2022
A: .625" and .875" sizes are next. We will look at options for .936" models once those projects are launched. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (5/2/2022)

Q: Hi, I was curious if the pin hole in the gas block (typically) lines up with existing holes pre drilled for A2 front sights? Was planning to replace the stock A2 front sight on my M&P Sport 2 and if I can simply pin the gas block using one of the existing holes, I'm sold. Thanks!

Asked by: Blake - 4/25/2022
A: A standard FSB uses taper while the Gas Controls use straight coiled spring pins. Check out the Barrel Pinning page here on the website for an inexpensive option to have your barrel pinned. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (4/26/2022)

Q: With the plunger rod that comes supplied with the RS7533 does the gas get shut off completely when it is adjusted all the way closed?

Asked by: Kerry - 4/23/2022
A: Each Gas Control currently comes with two Plunger sizes. On some configurations and chamberings the bolt will remain locked upon firing with one of these two Plunger sizes. Many 300BLK shooters use the #937 Plunger for this (included size) with subsonic ammunition. They can then dial back up to a higher number to cycle again. Some other configurations will use a longer Plunger like the #947, #957, or #967. There are many variables that affect which Plunger you'll need to select for this application including; port size, port position, ammunition used, suppressor used, bore, reciprocating mass, etc. Gas Controls are not designed to prevent unlocking with supersonic ammo, though that may be possible in some configurations as well. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (4/25/2022)

Q: Does this work on a 7.5 at pistol? And which length

Asked by: Mike - 4/13/2022
A: Yes. You'll need to enter the specific measurements of your setup in to the Configurator on the "Choose Your Gas Control" page (Link at the top of the website). Thanks
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Answer provided by: Administrator (4/14/2022)

Q: This may be a dumb question, but I'm planning on converting my M5 Aero Precision from impingement to gas piston. Will this system work for gas piston as well?

Asked by: Andrew - 4/11/2022
A: No, pistons are not compatible.
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Answer provided by: Administrator (4/14/2022)

Q: What is the model number for each length?

Asked by: Marc Brackhahn - 4/7/2022
A: The last two digits of each mode number represent the assembly length. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (4/7/2022)

Q: I was wondering what the dimensions and measurements are for the actual gas block. Would like to see if it fits under my handguard

Asked by: Steve Santos - 4/5/2022
A: Dimensioned drawings are available under the “Fitment” tab on the Gas Control page. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (4/8/2022)

Q: I have a 20" barrel with a rifle length gas system, with about one and a quarter to one and half inches from the end of gas block to the end of the hand guard. From what I can tell it looks like the RS7533 .750 will work. Any input?

Asked by: Tom - 4/5/2022
A: Sounds like the RS7533 will work, but enter your specs into the Configurator on the “Choose Your Gas Control” page to be sure. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (4/7/2022)

Q: what plunger do I need to be able to turn the gas off and then switch it to all the way open for subsonic 300 blackout

Asked by: tyler - 4/5/2022
A: Tyler, you’ll need to go through the setup process with your gun, ammo, suppressor, etc. to be sure, but we’ve had many reports of the #937 working for this purpose. That’s one of the two Plungers included in your Gas Control package.
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Answer provided by: Administrator (4/7/2022)

Q: Hello, Have ever heard about someone mounting it on a CMMG MK47 ? Thx

Asked by: Antoine - 4/4/2022
A: We’ve used Gas Controls extensively on 7.62x39 ARs, but not that model specifically. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (4/8/2022)

Q: my barrel length is 11.5" and the hand guard is 10.5" will your gas control work on my weapon? will in need to change to a 10" hand guard? Thanks

Asked by: malcolm carpenter - 4/4/2022
A: 10” would be ideal. With a longer handguard adjustments will be more difficult.
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Answer provided by: Administrator (4/8/2022)

Q: Hello, I have a 9.5 Griffin Armament 300 blkout barrel but it came pre-dimpled for both set screws and was curious as to the spacing of the set screw of the 7543 model specifically, thank you.

Asked by: Bob - 4/4/2022
A: Set screw spacing is 0.450”. Install the rear screw in the dimple then tighten the front wherever it lands. For additional security check out the “Barrel Pinning” page. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (4/8/2022)

Q: Hello I used your calculator and it gave me model RS7558. From the front of my gas block to front of my rail is 3”. Is the 5 5/8” the entire assembly or just extension. Not doubting your calculator but my measurements were all custom. 20” criterion hybrid profile barrel & 16.625” rails. Thanks for your help.

Asked by: John - 4/3/2022
A: The RS7558 is 5.8” long. The “Configurator” on the Choose Your Gas Control page is the best resource to determine fitment. If your entered accurate measurements you’ll get the correct answer. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (4/8/2022)

Q: I have an 11.5" AR 15 carbine which has only 1 " from the hand guard to the end of the barrel. Will your gas control device work on my weapon? The diameter of the gas block is 0.750" and it is a low-profile gas block. If the gas control won fit what can I do to make it fit? thank You Malcolm Carpenter

Asked by: malcolm - 3/30/2022
A: The Gas Control will work, but may not be as easy to adjust as we’d like. The ideal configuration leaves 1/2” to 1” of the Control Knob exposed. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (4/8/2022)

Q: there are 4 controls , how long are each of them . ? I have an 11.5 barrel, if I know how long they are it will help me decide witch one will work with my hand guard , .thank you

Asked by: robert - 3/30/2022
A: Enter your firearm's measurments on the "Choose Your Gas Control" page & you'll get color-coded results showing fitment. Thanks
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Answer provided by: Administrator (4/14/2022)

Q: Do you have a minimum or recommended gas block seat length to accommodate your gas controls? If so, then what would that be? Thank you.

Asked by: James - 3/27/2022
A: Any barrel that will accept a standard Li-profile gas block will have an adequate journal. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (4/8/2022)

Q: I am looking into buying an “ar-10” style rifle in 308 win. I have been looking at Sig 716i, aero precision M5, and Savage MSR10. I use a 762SD can from AAC. Do you know if your gas block works with any/all of these without modifications? Any other 16in barrel upper or complete rifle under $2000 you suggest?

Asked by: Ryan - 3/25/2022
A: Gas Controls will work with any direct-gas AR with the appropriate journal diameter. We currently offer .750" diameter models, but .625" and .875" models are coming. You'll need to verify fit with your handguard as well (dimensions under "Fitment" tab on product page). That's much less of an issue with large-frame ARs, though. We have an M5 as a test rifle in the shop that works great. We'll also have complete 308 uppers added to the site as soon as the final components arrive. Thanks for your interest in Riflespeed!
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Answer provided by: Administrator (3/25/2022)

Q: Hello I have a 16 inch barrel and 15 inch handguard I do see that this is not compatible however looking at the chart I see if I use a mid length version and the rs7558 the adjustable knob will be at the end of handguard not sticking out by your measurement however I do not mind as it doesn’t seem like I won’t be able to adjust just won’t be as easy. Will this still be okay ?

Asked by: Bradly Marks - 3/25/2022
A: Yes, though adjustments will be more difficult.
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Answer provided by: Administrator (4/8/2022)

Q: How much does each model of the gas controls weigh?

Asked by: Conor Padden - 3/24/2022
A: The RS7519 weighs 3oz, about 1oz more than most low-profile gas blocks. The RS7558 weighs 4.7 oz, or a bit less than a Milspec front sight base. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (3/25/2022)

Q: Hello, do you know if this will fit inside a rock river lar15. I’ve looked at the dimensions of my gun and your spec sheets and it looks like it’ll be pretty tight. I just thought I’d ask before I order being RRA is a pretty popular brand you might have looked into this before? Thankyou!

Asked by: Nick creek - 3/24/2022
A: We have not looked at that specific model, bt we have used other RRA models successfully. As long as the inside of the handguard is 1.225" or larger and the gas tube area is fully machined inside (almost all are) you should be good to go. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (3/25/2022)

Q: Okay I have an integral suppressed .300 blk out I need this but I’m not sure what size I need I have a 8inch barrel and a 8 inch suppressor the gas block is behind the suppressor how will this work? Also I have 10.5 mk18 I just need help lol

Asked by: Dennis Taylor - 3/22/2022
A: Dennis, the Mk18 is probably compatible, but the integrally suppressed model is probably not going to be. Watch our youtube video titled "Riflespeed Gas Control Selection and Installation" and then jump on the "Choose your Gas Control" page and enter your measurements into the Configurator. Hit us up at [email protected] if you have other questions. Thanks!
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Answer provided by: Administrator (3/25/2022)

Q: Can this Riflespeed gas systems be used on rifles build with conventional, polymer, handguards, like the Magpul MOE, rather than the railed handguards? What's the measurements for conventional handguards?

Asked by: Jose B. Torres - 3/21/2022
A: Gas Controls are not designed to be used with a handguard retainer. You’d need to run a floating handguard.
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Answer provided by: Administrator (4/7/2022)

Q: Does this gas block have a “0” setting? I would like a setting to completely block gas.

Asked by: Alec Mathy - 3/20/2022
A: Riflespeed Gas Controls are completely modular. You can set them up with as much or as little restriction as needed. Check out the article on Plunger Selection in the RifleBlog (link at the top of the page) for more details. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (4/7/2022)

Q: Are we getting ready for 625 gas bl. Touch base with me. If you want.

Asked by: Tom f Coleman jr - 3/19/2022
A: Be sure to sign up for the waitlist notifications, Tom. We're working for a late-April launch on the .625" models. Thanks
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Answer provided by: Administrator (3/25/2022)

Q: How do these attach to the barrel. Pin? Screws? Thanks.

Asked by: Mitch - 3/18/2022
A: They come with set screws, a cross-pin and a pre-drilled hole for the cross-pin. You'll need to have your barrel cut for the cross-pin if you choose to go that route. It's optional, but recommended for defensive/tactical use. See the "Barrel Ponning" page here on the website for more info on that. Thanks
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Answer provided by: Administrator (3/18/2022)

Q: I have a 10.5 Ruger AR pistol. It has a carbine length gas system and a 9 inch handguard. The riflespeed fitment calculator said none of the gas block sizes would work. However, I'm semi-confident the shortest version of the riflespeed GB would fit with just enough sticking out from under the handguard to make adjustments??? Please advise, thank you.

Asked by: Blake Rutherford - 3/18/2022
A: The Configurator allows for a minimum of 0.400" of exposed Control Knob (the numbered part you turn). You'll have less exposure than that, but the Gas Control will still work as intended. Adjustments won't be quite as easy, though. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (3/18/2022)

Q: DPMS G2 308 SASS model. I need a .936 gas block?

Asked by: Ron - 3/15/2022
A: We have .625" and .875" models in the works. We'll evaluate options for the .936" models once we complete some other product development projects.
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Answer provided by: Administrator (3/16/2022)

Q: What is the inner diameter of the extended controls? I have a small flare towards the end of my barrel and I would like to see if the controls will fit over it. Thanks

Asked by: Gabriel - 3/13/2022
A: The ID Is larger than the Gas Journal size so you'll be able to clear any barrel with the appropriate journal size.
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Answer provided by: Administrator (3/16/2022)

Q: Will this gas block fit inside of an aero precision atlas s-one? The atlas is a very slim and low profile handguard. This gas block looks bigger than my current setup. Will it fit?

Asked by: Gabriel - 3/13/2022
A: The Atlas-R handguards have a lowered center section that prevents use of our Gas Controls on some configurations, but works in others. The Atlas-S center section is extremely low and not compatible with Riflespeed Gas Controls in any configuration.
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Answer provided by: Administrator (3/16/2022)

Q: When the control knob is all the way down does it completely block the gas port or is some gas still going through?

Asked by: Kerry - 3/7/2022
A: You can set it up that way if desired. Since the system is completely modular you can choose as much or as little restriction as needed. Be sure to check out the article on Plunger Selection in the RIFLEBLOG (link at top of page). Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (3/7/2022)

Q: I am building an Aero Precision M5 (308) 16” mid length. Will it fit under the atlas r one 1.7” hand guard?

Asked by: Christopher Hearn - 3/3/2022
A: Chris, we don’t have one of those handguards to work with, but most handguards with an inside diameter of 1.25” or greater will work. Check the dimensioned drawings under the “Fitment” tab on the Gas Control page. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (3/7/2022)

Q: Would you happen to know if this item fits the SLR Rifleworks ION 4.25" Lite MLOK Handguard? Thanks you

Asked by: Bonifasio - 3/3/2022
A: We don’t have a sample of that handguard to work with, but most free floating handguards with an inside diameter of 1.25” or greater work. Be sure to check the dimensioned drawings under the “Fitment” tab on the Gas Control page. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (3/7/2022)

Q: I who'd like to order 2 , 625 when in stock.thank you.v we ry good

Asked by: Tom f Coleman - 3/2/2022
A: Tom, look for those in late April. Be sure to sign upon the waiting list.

Thanks
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Answer provided by: Administrator (3/3/2022)

Q: Will any variant of this gasblock fit with the IWI Zion in its pistol configuration? It's a 12.5 mid-legnth system and has an 11.5 inch rail.

Asked by: Frenzied - 2/27/2022
A: With a 12.5" barrel you'll need a handguard that's 11" or less in order to have enough access to easily make adjustments. The 11.5" handguard will cover the Control Knob. The Gas Control will work fine, but adjustments would be more difficult.
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Answer provided by: Administrator (3/1/2022)

Q: How many plungers does it come with for an ar10 application? How do I specify my application upon order time?

Asked by: David I Britt - 2/25/2022
A: Two sizes are included with each Gas Control. Those two cover about 90% of carbines. If your carbine needs a different Plunger to operate just let us know and we'll send you one. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (3/1/2022)

Q: I have a Springfield Saint Edge with a 16" barrel and mid length gas system. Will the RS7543 work on this rifle? Thank you for any assistance you can provide.

Asked by: Cass Ludwig - 2/23/2022
A: Cass, with a 16” midlength the right model will be determined by your handguard length. With an 11.5-12” handguard the RA7533 is perfect. With a 13” handguard the RS7543 is perfect. With a 14”-14.5” handguard the RS7558 is perfect. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (2/23/2022)

Q: Do you have any 625. Yet. You did a good job , thanks

Asked by: Tom f Coleman jr - 2/21/2022
A: We are working to have those ready to ship sometime in late April, but don't have a hard ETA yet. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (2/21/2022)

Q: Will the rifle speed gasblock work under a ris II DD rail

Asked by: Richard - 2/19/2022
A: Richard, we don’t have a RISII in the shop to use for verification, but we do have dimensioned drawings under the “Fitment” tab on the Gas Control page that you can use to compare to your handguard. The Gas Controls fit under most slim handguards down to 1.25” inside diameter. We’ve used smaller, but 1.25” is a good rule that gives you some clearance. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (2/19/2022)

Q: It would be helpful if you would have total length for the adjustable gas blocks so we can see how it would fit under the hand guard.

Asked by: Alex - 2/17/2022
A: We have a detailed dimensioned drawing showing the placement of each Gas Control length on the four main gas system lengths on the “Choose your Gas Control” page. The last two digits of each model number represent the assembly length. The Configurator on the “Choose your Gas Control” page will give you minimum and maximum Fitment length that allows you to determine how much Control Knob will be exposed beyond your handguard. Thanks for your interest in Riflespeed!
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Answer provided by: Administrator (2/17/2022)

Q: The length being 1.9, 3.3, etc. is that total length of the gas block?

Asked by: Luke - 2/17/2022
A: Yes, the 75 indicates the diameter (0.750”) and the last two digits represent the appropriate assembly length. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (2/17/2022)

Q: Will this gas block fit with a 15 inch Aero Atlas S-One handguard on an 18 inch, 308 rifle length barrel?

Asked by: Christopher - 2/16/2022
A: Christopher, the lowered center section on the Atlas S-One causes interference with the Gas Control and/or gas tube. A different handguard would be required. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (2/16/2022)

Q: Hello. I'm building a 300 blackout with a 12.5" carbon fiber barrel that will have a carbine gas tube, which part will I need?? Thank you and thank you for your timely response

Asked by: Tonee - 2/13/2022
A: With a carbine-gas 12.5” and a 10.5” handguard you can run an RS7543. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (2/14/2022)

Q: Hello. Oh, it will always be suppressed 247. Thank you and thank you for your timely response

Asked by: Tonee - 2/13/2022
A: Tonee, you may also want to check out our YouTube channel. We have several informative videos up there. Thanks again.
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Answer provided by: Administrator (2/14/2022)

Q: Hello. I'm building a 300 blackout with a carbon fiber 12.5" barrel with a 10.5" handguard from Midwest Industries which will be suppressed 247. Can a flash hider sit on here because I have yet to see a demonstration?? Thank you and thank you for your timely response

Asked by: Tonee Purnell - 2/13/2022
A: You can use a flash hider, brake, etc.if your barrel is threaded for one. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (2/14/2022)

Q: Do I need anything besides the gas tube and block #7533

Asked by: Terry Goodwin - 2/12/2022
A: High-temperature thread locker for the set screws is recommended. Cross-pinning with the included pin is even better. You’ll get a gas-tube roll pin in your Gas Control box and another in the gas tube package. Otherwise, you’re good to go. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (2/12/2022)

Q: My hand guard (KAC M5) requires a gas tube with the hump in it due to the delta ring. Does this gas block require your straight gas tube or can I use my standard tube?

Asked by: Ryan - 2/11/2022
A: Straight gas tubes are required. The straight gas tube works with a Delta Ring. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (2/11/2022)

Q: Is there any configuration that will work with the Q honey badger pistol?

Asked by: Graham - 2/8/2022
A: Graham, the most certain way to determine fitment is through the use of our interactive online tool the "Configurator" found on the "Choose Your Gas Control" page. That link is the very fist link at the top of the website. We also have a YouTube video showing the process of selecting the right Gas Control for your configuration. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (2/9/2022)

Q: Can the gas block be able to be turned off completely?

Asked by: Mark - 2/8/2022
A: Mark, the Gas Controls are fully modular and can be set up for any amount of restriction you want. We have many customers using their Gas Control to shut off cycling, especially with the 300 Blackout. Thanks for your interest in Riflespeed!
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Answer provided by: Administrator (2/9/2022)

Q: When are you coming out with bigger tube diameters? Love to put one on my bigger barrel

Asked by: John - 2/8/2022
A: Dusty, we have the .625” coming out next. We expect those to be ready in n early spring. We are working on the .875” concurrently, but that project is a bit behind the .625” models. I’d estimate early summer at this point, though we’re pushing to beat that if possible. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (2/9/2022)

Q: What is the weight for each of the different models?

Asked by: Levi Horili - 2/4/2022
A: Weights range from 3 to 4.7oz by size. Thanks for your interesting Riflespeed.
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Answer provided by: Administrator (2/4/2022)

Q: If your gas block is installed on a barrel with a pin and welded muzzle device, is there enough room to change out the plunger without having to have the muzzle device removed?

Asked by: Mark - 2/1/2022
A: Mark, this is an excellent question. The answer will depend on your specific setup. Some configurations have more than enough room to swap Plungers without pulling the muzzle device. In some configurations where the fit is close you can add a small spacer behind the muzzle device to have enough room. In others, the muzzle device would need to come off. The good news is that once initial setup is complete, you can maintain your Gas Control without disassembly for many thousands of rounds or until it's time to replace your barrel. We cover the maintenance options in the Maintenance Instructions Document on the "Tech Documents" page at riflespeed.com. Thanks for your interest in Riflespeed & let us know if you have additional questions.
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Answer provided by: Administrator (2/1/2022)

Q: One of the reviews are saying it doesn’t fit with the aero atlas r one hand guards which I have. I really want this but could you verify some how if this is true. Thanks

Asked by: Gavin - 1/31/2022
A: Unfortunately, the Atlas R1 handguard has a restricted portion in the center of the rail where the clearance is limited. If your Gas Control falls under that part of the rail you'll have issues without rail modification. If your Gas Control is placed closer to the end of the handguard then it should fit fine. You'll need to evaluate your specific setup. The dimensioned drawings under the "Fitment" tab on the Gas Control product page will provide specific measurements for your reference. Thanks for your interest in Riflespeed!
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Answer provided by: Administrator (2/1/2022)

Q: I'm wondering is it possible to use this system with a direct blowback 9mm AK pistol? Also, is this compatiable with any direct impignment AR?

Asked by: Dimitrius Nelson - 1/31/2022
A: Riflespeed Gas Controls are compatible with direct-gas ARs using 0.750" diameter gas journals. Additional sizes (0.625" and 0.875" diameter) will be released ASAP. Gas Controls are not compatible with blowback systems. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (2/1/2022)

Q: Love the concept of this gas block, I'm looking to run a "tucked" setup. Mega Arms MKM 12" hand-guard with a 10.5" barrel + Cherry bomb + Whistle-Tip or Saker up front. Would it possible to adjust the gas block settings through the slots in the hand guard. In other words can I use a bullet tip or something to adjust the gas while under the rail? Thanks in advance for the info!

Asked by: Mike - 1/29/2022
A: The detents are purposely designed to be difficult to turn. This prevents accidental adjustments. You may be able to use a cartridge in a tucked application, but it will be somewhat difficult by design. You may be better off having the vent holes in the handguard enlarged to allow finger access from the sides.
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Answer provided by: Administrator (1/31/2022)

Q: I have looked at the charts and an not seeing the info I need. Is there a fit for midlenghth gas tube and 15" hanguard?

Asked by: Rick - 1/29/2022
A: Rick, with a 16” mid-gas barrel the longest handguard we recommend is a 14.5” in order to have good access to make adjustments. Midwest Industries offers the G4 and the Combat Rail in 14" and they have worked very well for us. If you need to keep your 15" handguard then the RS7558 is the best fit, but please understand you will only have a small amount of the Control Knob exposed to grasp. Thanks for your interest in Riflespeed!
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Answer provided by: Administrator (2/1/2022)

Q: I have a 13.9 Mid length barrel with a 12.5 Aero precision rail. Is there a model that will fit this setup?

Asked by: Andrew Clodfelter - 1/27/2022
A: Andrew, hit the “Choose Your Gas Control” link at the top of the page. There you’ll be able to enter the specifics of your setup and you’ll receive color-coded outputs showing which models fit. If all models appear in red, you can try changing the handguard length to determine what length would work. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (1/28/2022)

Q: I have a Armalite AR-10, 16” stainless barrel. I run it with a suppressor all the time. Which model gas block should it use.

Asked by: Mark Maund - 1/24/2022
A: Mark, hit the “Choose Your Gas Control” link at the top of the page. There you’ll be able to enter the specifics of your firearm and you’ll receive color-coded outputs showing which models fit your rifle. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (1/28/2022)

Q: My handguard has an internal diameter of 1.70”. Will this gas block fit under it?

Asked by: Robert - 1/21/2022
A: That’s plenty of room, Robert. Shoot us some pics when you get it put together!
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Answer provided by: Administrator (1/21/2022)

Q: I have an aero m4e1 16" Carbine length upper with a 15" mlok handguard. Was curious if theres a model that fits it?

Asked by: Joey - 1/17/2022
A: Joey, with a 16” midlength the longest handguard we recommend is a 14.5” in order to have good access to make adjustments. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (1/21/2022)

Q: Howdy gents, Any plans to make this item for different diameter gas block? I've got a .875 barrel I would love to put this on. Thanks!

Asked by: Wade - 1/11/2022
A: Wade, the .625" sizes are next, then the .875" sizes will come shortly thereafter. We're working to have these available by early spring. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (1/11/2022)

Q: Hi, What is the maximum gas tube hole size on a barrel that this gas system can accommodate? What do you recommend for a 8" 300blk set up for subsonic?

Asked by: Neil - 1/9/2022
A: Gas ports up to 0.115" are supported. With an 8" 300BO you'll want to run somewhere in the neighborhood of 0.105"-0.112" depending on several factors. With a Gas Control installed there's little downside to a larger port, though. Thanks for your interest in Riflespeed!
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Answer provided by: Administrator (1/11/2022)

Q: Does the adjustment go all the way to 0? As in can you turn the gas all the way off to make the rifle act similar to a bolt action?

Asked by: Drew Knox - 1/9/2022
A: Drew, the Gas Controls are fully modular and can be set up for any amount of restriction you want. We have many customers using the shutoff method you describe. Thanks for your interest in Riflespeed!
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Answer provided by: Administrator (1/11/2022)

Q: Is this compatible with a full length RIS II rail or would it touch the rail?

Asked by: henry - 1/6/2022
A: Henry, verify using the dimensioned drawings of the Gas Control provided under the “Fitment” tab on the Gas Control product page, but it should be no problem. We’ve used handguards as small as 1.225” inside diameter. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (1/6/2022)

Q: Hi, Will be running 300blk 8 or 9" barrel subsonic mostly thru a pistol length gastube with your gasblocks. Would I still be able to run supersonic as well or would that damage the gas block due to pistol length and too much pressure?

Asked by: Jay - 1/4/2022
A: That will be fine. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (1/4/2022)

Q: Good morning. I am doing a complete Aero precision 300 blackout build. I am using a 10.5" barrel and an Atlas R-One 9.3" handguard. What are your recommendations for gas block? And will be a pistol length gas system as well. Thank you in advance.

Asked by: Miles - 12/30/2021
A: With a 10.5" pistol-gas barrel you can run an RS7543 with an 8" handguard. To evaluate other configurations, hit the "Choose Your Gas Control" link at the top of the site. There you can enter the measurements of various combinations of components and see what works. Gas Control model numbers that fit will be displayed in green. Models that do not fit a given configuration will be shown in red. Thanks for your interest in Riflespeed!
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Answer provided by: Administrator (1/3/2022)

Q: Any chance we can see custom lengths? I’m looking for a 3.9”-4” length. I have a Midwest industries 11.5 handguard with a 6.5 Grendel lilja barrel. It’s a 12.5 but Lilja measures the barrel extension as well so it’s more like a 12”. Really like your solution for adjusting gas with no tools, currently using superlative adjustable gas block, and I have to take my can off to adjust it, I had the gas too light the other night and I was hog hunting, it was a single shot :(

Asked by: Reid Averill - 12/29/2021
A: Custom lengths are not an option at the moment, unfortunately. It would be much less expensive to purchase a shorter handguard. The Cross Machine Tool HDM 10.5 and DRT 10.5 are excellent options that are reasonably priced and may work for you. Thanks for your interest in Riflespeed & let us know if we can answer any other questions.
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Answer provided by: Administrator (12/29/2021)

Q: Will you be releasing this at any point for barrels with larger diameter gas journals (.875 in particular)?

Asked by: Jeff - 12/26/2021
A: Jeff, the .625” sizes will be coming out next then the 0.875” sizes. We don’t have an ETA yet, but are working to get those out late winter/early spring
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Answer provided by: Administrator (12/28/2021)

Q: When will .875 barrel dia. gas controls be available?

Asked by: phil - 12/25/2021
A: Phil, the .625” sizes will be coming out next then the 0.875” sizes. We don’t have an ETA yet, but are working to get those out late winter/early spring
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Answer provided by: Administrator (12/28/2021)
A: Phil, the .625” sizes will be coming out next then the 0.875” sizes. We don’t have an ETA yet, but are working to get those out late winter/early spring
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Answer provided by: Administrator (12/28/2021)

Q: Would this item work with a criterion 12.5" .750 gas block under midwest industries 11.5 handguard (MI-CRM11.5)? If so, which model do I need to purchase here? Thanks, Vlad

Asked by: Vlad - 12/24/2021
A: An 11.5” handguard on a 12.5” barrel won’t give you as much exposure for your Control Knob as we’d like. You can do it, but adjustments will be more difficult. A 10.5”-11” handguard is ideal with a 12.5” carbine-gas barrel.
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Answer provided by: Administrator (12/24/2021)

Q: I am in the process of purchasing a V7 weapons harbinger 16" rifle with a mid length gas system. I believe I will need the RS7543 gas block. Is this correct? If I do purchase this can I have it sent directly to that company for my build?

Asked by: Thomas Woelfel - 12/24/2021
A: The RS7543 will be a good fit with a mid-length gas system and up to a 13” handguard. We will gladly send it to them. Just put instructions in the comment box on your order. Thanks & merry Christmas!
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Answer provided by: Administrator (12/24/2021)

Q: I saw that in description it says this won’t fit the Sig 716. I have a Sig 716i in 308. Will it fit mine? It’s the Sig 716i not the 716.

Asked by: Emmanuel Vargas - 12/23/2021
A: If your rifle is a direct-gas gun with a 0.750” diameter gas journal then you can use a Gas Control. Be sure to enter the details of your rifle into the Configurator on the “Choose your Gas Control” page (link at top of website). Thanks & merry Christmas.
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Answer provided by: Administrator (12/24/2021)

Q: Gas tube included or needs to be purchased separately?

Asked by: Harlan - 12/21/2021
A: Gas tubes are sold separately (under the accessories category). You'll need to select the correct size for your firearm. Thanks for your interest in Riflespeed!
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Answer provided by: Administrator (12/23/2021)

Q: Do you make them for a .625?

Asked by: Brad - 12/20/2021
A: Brad, we have the .625" sizes tooling up now and are working to begin shipping those by late winter/early spring.
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Answer provided by: Administrator (12/23/2021)

Q: I want to be able to shoot as quiet as possible. Does this have a setting zero to turn my rifle into a straightpull bolt gun?

Asked by: William - 12/13/2021
A: Riflespeed Gas Controls are fully modular and can be set up to provide full restriction (non-cycling/off) or complete function with any cartridge or configuration. We offer many Plunger options to accomplish the configuration you wish to use. Each Gas Control comes with two different size Plungers that cover a wide range of performance for most popular cartridges. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (12/13/2021)

Q: Which gas block should I get for a 300 blackout pistol with a 9 inch barrel shooting subsonic rounds using a suppressor? With and without the suppressor?

Asked by: Brad - 12/11/2021
A: Brad, enter the specifics of your firearm into the Configurator found on the "Choose Your Gas Control" page here: https://www.riflespeed.com/Choose-your-Gas-Control_ep_41.html

You'll receive color-coded outputs showing which Gas Control models fit your firearms. Green = Go Red = No. Feel free to email [email protected] if we can be of further help. Thanks for your interest in Riflespeed!
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Answer provided by: Administrator (12/13/2021)

Q: Which option should I choose if I have a 16" mid length barrel and a 14" handguard?

Asked by: Morgan G falcone - 12/9/2021
A: If your barrel has a standard 0.750" diameter gas journal then the RS7558 is perfect your setup.
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Answer provided by: Administrator (12/9/2021)

Q: Do I have to replace my current gas block with this item?

Asked by: Marty - 12/5/2021
A: Correct. Riflespeed Gas Controls replace your current gas block. You’ll also need one of our straight gas tubes.
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Answer provided by: Administrator (12/5/2021)

Q: I have an Aero build with a 10.5" criterion barrel, a 9" Atlas handguard, and a Griffin Armament taper mount muzzle device. I did the fitment guide and it shows none of the gas controls will work with this setup. Is that correct? Doesn't look to be a lot of room between the handguard and the muzzle device. I also have an ADM build with a 12.5" barrel and 10.75" handguard. The fitment guide says a RS7915 will work. Is that correct? Thanks! Just want to make sure before I make a purchase.

Asked by: Kevin McAdams - 12/2/2021
A: Kevin, the 9” handguard will cover most of the Gas Control, but it is doable. You can see what an 8” handguard looks like on the homepage of the website. There’s a pic of a 10.5” carbine with a BCM MCMR8 handguard between the picture of the FDE upper and the OD Green rifle on a bipod. That will give you a way to develop an idea of what your 9” setup will look like.
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Answer provided by: Administrator (12/9/2021)

Q: What is the minimum hand guard id that will accommodate the gas control? Will the atlas S-one or R-one from aero precision work?

Asked by: Caleb - 11/28/2021
A: The Atlas S-One has a lowered center section that prevents use in some configurations. The Atlas R-One fits fine. We've used handguards with an inside diameter as small as 1.225" (Midwest Night Fighter) with success. Most slim handguards are around 1.3" inside which fits easily. Check the "Fitment" tab on the Gas Control Product page for a dimensioned drawing that can be used to verify handguard fit.
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Answer provided by: Administrator (11/28/2021)

Q: What are the weights of the currently available .750 blocks? Thank you.

Asked by: Richard the guy - 11/27/2021
A: Richard, the RS7519 weighs 3oz, about 1oz more than most low-profile gas blocks. The RS7558 weighs 4.7 oz, or a bit less than a Milspec front sight base. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (11/27/2021)

Q: Is this a bleed off gas system or does the excess gas get forced out the barrel somehow?

Asked by: Nathan Mohler - 11/23/2021
A: Gas exits the muzzle behind the projectile. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (11/27/2021)

Q: Dear Madame/Sir, I would like to inquire if your adjustable gas block can be installed on CMMG Resolute MK47/Banshee MK47 with 16" and 10-1/2" barrels and used with existing handguards?

Asked by: Nico - 11/10/2021
A: Nico, the best way to determine fitment is to enter the measurements of your configuration into the interactive Configurator tool on the "Choose Your Gas Control" page. You'll get color-coded results showing which Gas Controls fit your firearm. In the event that no models are shown to be compatible, the most common issue is with handguard length. You can enter different values into the "Handguard Length" dropdown to see what would work. If that's the case for you please email [email protected] with your measurements and we'll make some suggestions. Thanks for your interest in Riflespeed!

https://www.riflespeed.com/Choose-your-Gas-Control_ep_41.html
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Answer provided by: Administrator (11/10/2021)

Q: I have a BCM 11.5 barrel with a BCM 10 inch mcmr rail but it's 10.5 to the flare I'm sure you no what I am saying will your gas block work with this build? Thanks

Asked by: Bullet - 11/8/2021
A: The RS7533 Gas Control will work if your gas journal is 0.750” diameter. The length of the MCMR10 handguard won’t provide as much access to the Control Knob as we’d like you to have, but the Gas Control will definitely work. The MCMR9 provides more than enough access if you wish to change handguards in the future.
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Answer provided by: Administrator (11/8/2021)

Q: What are the different models?

Asked by: Dave - 11/7/2021
A: Models and information are available here: https://www.riflespeed.com/RIFLESPEED-Gas-Controls_p_12.html

Thanks for your interest in Riflespeed!
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Answer provided by: Administrator (11/27/2021)

Q: I have an intermediate length gas system on an 18" rifle. I can't seem to find any straight gas tubes for this length. Any suggestions?

Asked by: Austin - 11/4/2021
A: White Oak Armament offers custom gas tubes for a reasonable price. We will add intermediate tubes in the future, but don’t have an ETA yet.
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Answer provided by: Administrator (11/7/2021)

Q: Will this fit inside a Timber Creek Handguard? The TC Handguard calls for a low profile gas block for it to fit according to their website.

Asked by: Steven Cha - 10/29/2021
A: Riflespeed Gas Controls fit under most slim handguards. We have a dimensioned diagram under the “Fitment” tab on the product page showing the measurements of the Gas Controls that you can use for reference when determining handguard fit. We’ve used slim handguards with inside diameters as small as 1.225” successfully.
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Answer provided by: Administrator (11/13/2021)

Q: I have a Daniel Defense ddM4V11 pro with an 18 inch barrel - what kind of setup do I need?

Asked by: Rick Jurewicz - 10/25/2021
A: Rick, the best way to determine the correct model for you firearm is to use the Configurator on the “Choose your Gas Control” page. You’ll get color-coded outputs showing which models fit your firearm. Green for go & red for no. Email [email protected] if you have any trouble.
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Answer provided by: Administrator (11/12/2021)

Q: i recently purchased a PSA GEN3 PA10 18" MID-LENGTH .308 WIN 1/10 STAINLESS STEEL 15" LIGHTWEIGHT M-LOK STR SSA-E RIFLE. Does your gas control work with their setup and which one do you recommend. Thanks, Eddie

Asked by: EddieF - 10/22/2021
A: Eddie, thanks for your question. While the Gas Control would work with your carbine, the 15” handguard would cover up the Control Knob completely. This would make it more difficult than we’d like to make adjustments. With a mid-length gas system the RS7543 works with up to a 13” handguard and the model RS7558 works with up to a 14” handguard.
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Answer provided by: Administrator (10/22/2021)

Q: Will the RIFLESPEED Gas Control fit under a BCM MCMR handguard or any other low profile handguards? I used the configurator to find the correct knob. I just want to know if it will fit under a handguard that requires a low gas block.

Asked by: Nic - 10/21/2021
A: Yes, the MCMR works great with Riflespeed Gas Controls. The 10.5" upper shown on the Riflespeed.com homepage and in the product images of the Gas Control product page is wearing an MCMR8. That's a great option for 10.3" - 10.5" builds. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (10/21/2021)

Q: Are you folks going to make an option that fits folks with mid length gas, 16" barrel and 15" handguards in the future? I'd really like to get one of these on my DDM4V7. ??

Asked by: Benjamin Knoerle - 10/21/2021
A: Benjamin, this a great question and one that comes up often. The issue with your configuration isn't the Gas Control, it's the length of our handguard. The 15" handguard covers so much of a 16" barrel that it is difficult to access the Control Knob. It CAN be done, but making adjustments will be more difficult than we'd like. A 14" handguard offers plenty of access to easily make adjustments. If you don't mind having the Control Knob nearly tucked under the 15" handguard then the model RS7558 is the solution. Thanks for your question.
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Answer provided by: Administrator (10/21/2021)

Q: What is the distance between the set screws for the RS7543 gas control?

Asked by: BDeschamp - 10/20/2021
A: The Screws are 0.450" apart. We have additional technical specs and dimensions under the "Fitment" tab on the product page as well. Thanks for your question.
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Answer provided by: Administrator (10/20/2021)

Q: Can the gas adjustment be configured to include a full off setting? Thanks!

Asked by: RGCGFMT - 10/19/2021
A: Riflespeed Gas Controls are fully modular and can be set up to provide full restriction (non-cycling/off) or complete function with any cartridge or configuration. We offer many Plunger options to accomplish the configuration you wish to use. Each Gas Control comes with two different size Plungers that cover a wide range of performance for most popular cartridges. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (10/20/2021)

Q: I see the different model numbers but don't know what they represent which one is the longest one and which one is next so forth and so on and how long is each one so I can determine which one I need to get just outside the handguard

Asked by: Bobby - 10/13/2021
A: Bobby, there is a fitment chart titled "Gas Control Compatibility Chart" on the Tech Documents page. The link for that is at the top of the website. We also offer an interactive calculator that lets you input the measurements of your carbine and you'll get color-coded outputs showing you which models fit. That is found on the "Choose your Gas Control" page linked at the top of the site. Thanks for your interest in Riflespeed. Feel free to hit us up at [email protected] if we can be of additional help.
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Answer provided by: Administrator (10/14/2021)

Q: For a 14. 1/2 what number should I buy today It going to be a new build. Thank you (Henry)

Asked by: Henry Will - 10/12/2021
A: Henry, with a 14.5" barrel using a Midlength gas system (most common these days) you can use an RS7519 and a handguard up to 10" or an RS7533 with up to an 11.5" handguard or an RS7543 with up to a 13" handguard.

You can also try different configurations of handguard or gas-system-length by entering your info into the "Choose Your Gas Control" page here at riflespeed.com
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Answer provided by: Administrator (10/12/2021)

Q: I have a Ballistic Advantage Hanson 8.3" barrel with pistol length gas system under a 7" BCM KMR handguard. Will the gas control work with my AR?

Asked by: Tim - 10/11/2021
A: Tim, thanks for your interest in Riflespeed Gas Controls. If you enter the specifics of your firearm into the Configurator on the "Choose Your Gas Control" page you'll see that the model RS7533 fits your setup. Shoot us some pictures when you get it put together!
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Answer provided by: Administrator (10/11/2021)

Q: I am curious if this will work on a 7" barreled 300 blk upper I have from BCM. The configurator doesn't go down to 7" barrels but the graph below it looks like it should work.

Asked by: Mark - 10/7/2021
A: Hey Mark. Thanks for your interest in Riflespeed. If you’ll check the box next to “Check here to enter a custom measurement in the field below.” You can enter any barrel length you need in the field. Each drop-down menu section has this ability. Let us know if you have any further issues.
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Answer provided by: Administrator (10/7/2021)

Q: Any point of impact shift between the settings?

Asked by: Robert Swagger - 10/7/2021
A: You’ll see no point-of-impact shift between the Gas Control settings used for each configuration, but may see some shift in point-of-impact when adding or removing a suppressor, as is usually expected. You’ll need to confirm or re-zero your carbine after installing your Gas Control to insure that your point-of-aim and point-of-impact are aligned. Thanks for your interest in Riflespeed.
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Answer provided by: Administrator (10/7/2021)

Q: You only have 750 now, or do you have 625. Thanks for touching base with me.

Asked by: Tom f Coleman jr - 10/5/2021
A: 05 October 2021: We currently have 0.750" sizes. The 0.625" are scheduled for future production, but we do not have an ETA at the moment.
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Answer provided by: Administrator (10/5/2021)

Q: I was on the wait list for the gas system to be in stock, I got the email that it was back in stock. But it wasn’t. Now it won’t let me get back on the waiting list.

Asked by: John OBrien - 10/5/2021
A: John, we sold out of some sizes very quickly tonight. The waitlist feature is not allowing some customers to sign up for out of stock sizes while other sizes are in stock. We are working with our web developers to remedy this issue. Thanks for your interest and your patience. We will have additional sizes back on the shelf ASAP. Please send an email with the model number you are interested in and WAITLIST as the email subject line. Example: "RS7519 WAITLIST"
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Answer provided by: Administrator (10/5/2021)

Q: When will this length be in stock?

Asked by: Chris - 10/5/2021
A: Chris, we’re working to get all sizes back on the shelf. You can place a backorder if you’d like and be at the front of the line when they are complete. Thanks for your interest in Riflespeed!
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Answer provided by: Administrator (10/7/2021)

Q: Does the adjustable gas block include the gas tube or is that a separate item?

Asked by: Maxwell Badgerouso - 10/5/2021
A: Gas tubes are sold separately. You’ll need to select the correct length for your firearm. Visit https://www.riflespeed.com/Straight-Gas-Tubes_p_13.html for the measurements of each model of gas tube and to order.
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Answer provided by: Administrator (10/5/2021)

Q: Just wondering what the lead time is looking like on these bad boys. Thanks!

Asked by: Jordan - 9/29/2021
A: Jordan, we are working hard to have these available next week sometime. Be sure to sign up for the wait list on the product page to receive notifications when new stock is added to the site. Thanks for your interest!
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Answer provided by: Administrator (9/29/2021)

Q: Will this system work on barrels with a Hanson profile?

Asked by: Guntivities - 9/27/2021
A: Yes, Riflespeed Gas Controls work well with the Hanson Profile. Thanks
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Answer provided by: Administrator (9/28/2021)

Q: Which direction is the bleed off gas expelled ? EX. ( FORWARD , SIDE , ?)

Asked by: Matt - 9/26/2021
A: There is no bleed-off feature. Thanks for your interest!
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Answer provided by: Administrator (9/28/2021)

Q: Do you , or will you be making a clamp-on block for .750" ?

Asked by: Matt - 9/26/2021
A: Clamp-on models are not planned at this time.
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Answer provided by: Administrator (9/28/2021)

Q: What should I get that will fit a (6mm ARC 24" barrel with a 15" slim hand gard

Asked by: Ryan - 9/24/2021
A: Please enter your firearm's information into the "Configurator" found on the "Choose Your Gas Control" page:

https://www.riflespeed.com/Choose-your-Gas-Control_ep_41.html

Model numbers that fit your configuration will be shown in green. Thanks for your interest!
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Answer provided by: Administrator (9/28/2021)