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DoubleStar Adjustable .750in Low Profile Gas Block
$57.99 $52.99 Save $5.00
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Most Helpful Positive Review Nice quality and easy to adjust
I built a 6.5 Grendel upper with a 24” barrel recently and was having some issues with pressure and ejection. Install this adjustable gas block and was easily able to tune it to each type load I am using. Definitely needed with carbine or extra long barrel lengths. Would recommend this gas block ...
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Most Helpful Negative Review Adjustable gas block
Did not work for my application on a very over gassed carbine with an m16 bcg and low profile rail. This product would be better used on a competition gun running a low mass bolt carrier group, light buffer and light spring. Also beware that like many others, this block doesn’t fit well under slim a...
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Broke my Allen wrench and unusable

by Christopher Capell, Verified Owner from AL, United States Written on May 22, 2021
Literally put it all together got the upper almost put together. The set screws do not go into the gas block very well at all it literally snapped my Allen key wrench off into the set screw and now it is completely useless because now there is a setscrew stuck in there that I cannot back out. So now it’sworthless
Pros:
  • good paper weight
Cons:
  • Terrible gas block
Best Used for:
  • Holding paper down in the wind
Would recommend: No
1 of 7 found the following review helpful.
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Gas block didn’t adjust

by None, from OH, United States Written on February 14, 2021
It’s a nice gas block but as far as adjustable I didn’t see a change in any adjustment of the screw I turned the screw all the way in which should have shut it off or at least lesson pressure but saw no difference. So if ur looking for just a gas block it’s fine but if u are looking for adjustability stay away and just buy a surplurative (prolly not spelled right ) I have a couple and work real nice I cheaped up on this purchase and should have née better
Pros:
  • None on adjustability
Cons:
  • Did not work
Would recommend: No
0 of 1 found the following review helpful.
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Pick a different one

by Carpenterminator, Verified Owner from TX, United States Written on June 27, 2018
This product is poorly designed. The adjustment screw (the black one, by the way- there are no instructions at all with this) faces the receiver rather than the muzzle, so the hand guard probably has to come off to adjust it. The other thing- for my low mass operating system build, the adjustment screw ended up so deep that the brass set screw actually threads across the end of the adjustment screw... ridiculous.
Would recommend: No
3 of 5 found the following review helpful.
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