The CMMG ZEROED(TM) Muzzle Brake features angled ports that provides excellent recoil control and minimizes muzzle rise. This allows for faster return to target for more accurate follow-up shots and creates a more enjoyable shooting experience. Designed for firearms chambered in .308 Win and 7.62x39mm and made from 4140 Steel with a Nitride finish, the ZEROED Muzzle Brake has the durability and attention to detail that all CMMG products have come to be known for.All CMMG products come with our Lifetime Quality Guarantee.Includes:Muzzle Brake .308 | 5/8-24Crush Washer**Patent(s) Pending**