Reduced recoil contributes to improved accuracy over a longer string of fire. Brake clocks into position using an easy-to-use external jam nut. Reduces noise and blast to the sides of the shooter. Installs quickly using an 11/16 box wrench or crescent wrench. Manufactured from alloy steel with a matte black finish. Designed to fit the Ruger American Rifle® Ranch chambered in .450 Bushmaster. Threads: 11/16-24 TPI. Dimensions: 2.2 length 1.0 diameter. Weight: 3.0 ounces. Made in the USA.