The yhm slant.30 cal 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 5/8"-24 and includes the crush washer.Finish: BlackType: Muzzle BrakeModel: SlantSize: 30 CalMaterial: SteelThread Pattern: 5/8"-24 tpi