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Reviews & Ratings for Riflespeed Gas Control .625in Assembly Block — 5 reviews

(5 reviews)
Riflespeed Gas Control .625in Assembly Block
Riflespeed Gas Control .625in Assembly Block
As Low As $173.99 Save Up to 24%
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Most Helpful Positive Review very good but not perfect
I wish this option the 3.3 length had knurled edge like the shortest option has. I find it very difficult to turn. Make sure you have at least and inch protrusion past the handguard. I did multiple measurements and tried to go with the most integrated streamlined option but I really need a shorter handguard. Btw does not fit aero/atlas s one handguard. The section under the 1913 rail is not received in the center center so it hits the top of the gas block. I decided to modify the rail by grinding about an inch or so under the pic rail to relieve the the area where the gas block sits. It worked...
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these are the best ever

by Jon Bongo, Verified Owner from FL, United States Written on September 12, 2026
I took off all of my adjustable, gas blocks and switch to these hands-down, the best ones on the market
Would recommend: Yes
Was it helpful to you? Yes | No
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might be useless for me? but it sure does look cool

by Zach, Verified Owner from MO, United States Written on June 9, 2026
Put this on an M4 clone with a criterion barrel in it.
Followed the instructions, started at pos 1 with 5 rounds, failure to feed, pos 2 fully functional with last round bolt hold open.
Tossed the supressor on it & everything ran flawlessly for another 300 rounds.

Not sure if its actually doing anything for me or not lol.

Gonna throw an frt under it & see how many changes i have to make.
Pros:
  • ease of instalation
  • Adjustable gas settings
  • Eas of Maintenance
Cons:
  • Price $$$
Would recommend: Yes
Was it helpful to you? Yes | No
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Riflespeed adjustable gas block…

by Raphiekim, Verified Owner from GA, United States Written on April 3, 2026
Took forever to receive..ordered in November and received in March…. Product is well made and excellent idea for suppressed AR platform. If not in rush on AR build. Perfect fit and length.. if purchasing check all specs and confirm. US made quality.
Pros:
  • Idea,quality
Cons:
  • shipping time
Best Used for:
  • Suppressed AR platform
Would recommend: Yes
Was it helpful to you? Yes | No
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Awesome Quality

by Sterling, Verified Owner from MI, United States Written on January 22, 2026
I bought the wrong size tho. Accident getting replacement from Optics Planet this next week.
Would recommend: Yes
Was it helpful to you? Yes | No
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Last updated 2025-12-28 UTC.