Price: $45 including shipping. Full retail on BCM is $89.95 plus shipping. The BCMGUNFIGHTER™ Compensator Mod 0-5.56 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. It is a compensator that is built for the 21st Century Gunfighter! Nitride treated for maximum corrosion resistance Includes a Crush Washer Should be installed by a qualified armorer.