BCMGUNFIGHTER Compensator MOD 4 - 5.56Tuned slots and ports offer recoil mitigation, compensation of muzzle rise, and flash reduction Designed to have less side blast and noise associated with typical compensators Nitride treated for maximum corrosion resistance Includes a Crush Washer Should be installed by a qualified armorer This Compensator was not designed as a gamers comp. It was designed for tactical applications to reduce muzzle rise, flash signature, noise, and lateral pressure.