The VG6 Gamma is a muzzle brake and compensator hybrid that virtually eliminates recoil and minimizes muzzle movement. Its unique chamber geometries give it a very soft feel in the shoulder and the gas ports dimensions have been strenuously tested to give the utmost control to the muzzle. This model is constructed of 17-4 stainless steel with a black nitride finish and 5/8x24" tpi threads. It is compatible with 300 Blackout caliber.