The yhm slant 5.56mm muzzle brake and compensator hybrid is designed to reduce recoil as well as muzzle rise for a quicker follow up shot.It is made from quality heat-treated steel and plated with melonite qpq with a matte black finish.It is threaded 1/2"-28 and includes the crush washer.Finish: BlackType: Muzzle BrakeModel: SlantSize: 5.56mmMaterial: SteelThread Pattern: 1/2"-28 tpi