Bergara’s Omni Directional Muzzle Brake greatly mitigates felt recoil via a series of ports. This muzzle brake is compatible with the B-14 Terrain, Premier HMR PRO, Premier Approach, and Premier Highlander. Made from 416 stainless steel and is given a Nitride heat treated finish. Specifications: Outside Diameter: .750"Bore Diameter: .330"Threads: 5/8-24"Length: 2" Bergara Omni #1 Highlander/HMR Pro/Approach .30 Cal .750" Muzzle Brake BA0011