The CMMG ZEROED(TM) Muzzle Brake 9mm 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 creating a more enjoyable shooting experience. Designed for popular calibers like 9mm and 350 Legend and made from 4140 Steel with a Nitride finish, the ZEROED Muzzle Brake has the durability and attention to detail that all CMMG products are known for.All CMMG products come with our Lifetime Quality Guarantee.Includes:Muzzle Brake 9mm | 1/2-28Crush Washer**Patent(s) Pending**