The Comstock Armory Compact Muzzle Brake is compatible with common .900"-24 adapters like the Comstock LPA, Q Plan-B, and Rearden Atlas. The MBC greatly reduces recoil and blast baffle wear, and unlike most brakes out there, it does not need to be timed with shims. FeaturesAllows for the quick attachment and removal of suppressorsSignificantly reduces blast baffle wear; acts as a sacrificial baffleHigh strength 17-4 PH stainless steelDurable black nitride finish3/4" wrench flats for easy installation and removalEffectively reduces recoilRotationally symmetric and does not need to be timed with shims1.6" overall length; adds just 0.97" to the muzzle