Exterior dimensions consistent with Mil-specs for mounting flash hider mounted suppressors; Tuned slots and interior cone offer maximum in recoil mitigations, compensation of muzzle-rise, and flash reduction; Designed to have much less side blast and noise associated with typical compensators. Makes it perfect for working in teams for CQB; Nitride treated for maximum corrosion resistance; Threaded 1/2x28 for 5.56mm AR15 platforms; Includes a Crush Washer; Should be installed by a qualified armorer; Black Finish