Q: Are these compatible with the Midwest Industries Lightweight MLOK handguards? (part number MI-CRLW10.5) MI says this handguard is not compatible with piston systems, but will the straight gas tube system on your gas blocks fit?
A: Yes. Thanks for your interest in Riflespeed.
Q: What is the weight range of this gas block?
Q: What are the weights of each of the gas block models?
Thanks for your interest in Riflespeed.
Q: What is the weight on the RS6233 (3.3") gas block?
Q: I'm looking at building a 16" midlength (0.625" barrel diameter) upper with a 14" handguard (Midwest Industries G4 if that matters). I don't have the parts yet, so I'm hoping you can recommend a length for a gas block.
Can you tell me which length I'd want?
A: The RS7558 will be perfect for that setup (assuming a 0.750" diameter). Thanks for your interest in Riflespeed.
Q: I have an 18" Criterion Core Barrel .625" with the rifle length gas system. I have the ADM 17" handguards and the RS6243 will end flush with the handguard and not stick out at all. Will this be a problem to adjust? I already have one of these on a different 18" barrel with the 15" handguards and it works great.
A: While it isn't ideal, we do have many customers that run Gas Controls flush or nearly so as you describe. Another option is to use an RS6219 or RS6221 and window the handguard. Contact support@ and we can provide pictures of this. Thanks!
Q: I have heard that the OD for the 0.625” gas blocks and the 0.75” gas blocks are the same at 1.19”(I wish they were smaller for the 0.625”). I am concerned that this may BARELY fit underneath my BCM MCMR 9(9.4” total length to the flare) because it has a ID of 1.30” so I will only have 0.055” of clearance all the way around and this is ONLY if I can get the rail PERFECTLY centered around the barrel. Are your gas blocks working fine on ARs with BCM rails? I saw an MCMR 8 rail with a 10.5” barrel on your website with the 1.9” gas block, but it was not really underneath the rail all the way and the area that is 1.19” seemed to be outside of the rail. I have seen some of your gas blocks installed on Geissele MK16 rails and they only have 1.25” IDs but that is not much clearance. Thanks for your help.
A: MCMR handgaurds work great with Gas Controls.
Q: What type of metal is your adjustable gas block made out of? I’m looking to put one on my criterion core 13.9” barrel, and I’m hoping the material is similar to the material my barrel is constructed of. Also, my 13.9” barrel with a midlength gas length system will be paired with a 13” Vltor freedom rail, and when I enter the data in your configuration tool nothing shows as compatible. I figured I’d just use the shortest model and adjust it with the handguard off, but would a different length be close to adjustable with the handguard on? Thank you!
Thanks for your interest in RIflespeed.
Q: does the gas block have a higher profile than a normal low profile gas block? if it does have a higher profile. what handguard fit?
A: The body is slightly taller than some gas blocks. The only known handguards with fitment issues are the Aero Atlas series and some older PRI round handguards where the Picatinny rail fasteners protrude inside the top of the cylinder. All others are fine.
Q: How do I know what model number goes with which gas block. you have 4 models of gas blocks and five different model numbers. I am going to continue to keep shopping till I get an answer or find a better website
A: David, we have three diameters with six lengths for each diameter. The model numbers correspond to those diameters and lengths.
RS7519 = -.750" diameter and 1.9" length
Thanks for your interest in Riflespeed
Q: Does the Gas Block come with the straight Gas tube?
A: Gas tubes are available in seven sizes and must be purchased separately.
Q: I have an AR platform (556) pistol and I am trying to find the right diameter gas block for my barrel
A: Here are a couple helpful resources for you:
Q: Hi, just wondering if your .625 Gas Blocks have pre drilled holes for pinning? If so, do they come with the pin? Thanks.
A: Yes they do. Thanks for your interest in Riflespeed.
Q: Are the collars made from aluminum? I really want to try one of these, but none of them work with my barrel/handguard setups
A: Control Knobs are nitride-finished steel.
Q: How long is the .625" RS6243 gas control ?
A: 4.3” long. Thanks for your interest in Riflespeed.
Q: I have aero m4a1 upper, 16in faxon hybrid profile gunner profile barrel and a 14in Midwest industries hand guard . I need a .625 gas block which size do I order ? Thank you !
A: If that’s a midlength gas system then go with the RS6258. Thanks for your interest in Riflespeed.
Q: Hi There. Looking at your adjustable gas blocks. I have a 11.3" (BA with .625) barrel and a 10.3" Aero Atlas S-One handguard. Can you recommend one of your adjustable gas block that would work if any? Thanks!
A: The Atlas series of handguards is incompatible due to the lowered center section of the handguard. Check out or assembled uppers and build parts for some ideas on suitable configurations. Thanks for your interest in Riflespeed.
Q: The diagram showing the measurements is for the .750" gas block. What is the distance from the center to the top of the gas block for the .625" version?
A: They are the same height. Thanks for your interest Riflespeed.
Q: I would like to use your .625 gas block under a carbon fiber handgaurd. As best I can determine it will not fit under the Faxon (appears to be .835" overhead clearance from barrel center-line) or the JAG Composites (.915" from barrel center-line) Am I doing my measurements correctly? Any Ideas?
A: Barrel centerline to top of Gas Control Body is 0.940". Dimensioned drawings are available under the "Fitment" tab on the Gas Control pages. The .625" and .750" are the same height.
Q: When is the new availability date for all the back order
A: We're starting to ship backorders this week Thanks
Q: Will these be shipping soon? I ordered mine 7/15/22
A: Ryan, we're beginning to fill backorders this week. We'll have yours out ASAP. Thanks for your patience.
Q: Good things tack time. Do you have a release time for 625.thankyou.
A: Tom, we're looking at sometime this month, but don't have a hard date yet. Parts are at Nitride now.
Q: Are the gas blocks predrilled for pinned installation? Do they have a set screw in the bottom to align and hold the gas block for drilling the barrel for the pin?
A: Yes, the Gas Controls are pre-dril the pin and include set screws. Check out our Barrel Pinning page for more info on having your barrel prepped for the pin. Thanks.
Q: Is this available? And if not when! Need the .625 ASAP with carbine gas block and barrel 11.5" and 10" rail what number is that? Can't find reference on site?
A: We're shooting for a late-April launch on the .625" sizes and will have the Configurator updated ASAP. From what you describe in your question, you'll need the RS6233. Thanks