The AR-15 Steel Low-Profile Gas Block from GunTec USA is made of steel and is designed for AR-15’s with .750 Diameter barrels. Three set screws are included with this Short Version AR-15 Steel Gas Block.

The right gas block may not only improve the aesthetics of your build, but it can also improve the function of your rifle. This small AR-15 part can reduce recoil and wear, increase reliability, and give you the option to run suppressed or unsuppressed.

The gas block fits over the small hole on the top of an AR-15's barrel. It traps some of the excess gas and sends it through a small port, then into a gas tube on top of the barrel, and back into the upper receiver.