The competition Precision Muzzle Brake with 5/8"-24 threads reduces the recoil of your AR-10, LR-308, and other 7.62x51/.308 rifle builds. This matte black precision AR-10, LR-308 Muzzle Brake is constructed of solid steel with 5/8"-24 TPI. The muzzle brake has a black melonite finish to products against damage from heat, and corrosion with six horizontal ports to reduce felt recoil and three top ports lessen muzzle rise. This .308 muzzle brake with keep your sights on target and reduce recoil. Made In The, USA.