For Reducing Recoil & Muzzle Rise Short Profile compact size High Grade 8620 Hardened to Rockwell 45 Tool Steel. Black oxide Finish The AR muzzle brake will reduce recoil & climb which will improve shooting and control. The AR competition muzzle brake redirects propellant gasses and reduces recoil and flash dramatically. Threads on all 1/2”x28 pitch. CNC Machined High Quality Steel Heat Treated Competition Muzzle Brake Side Ported And Ported On Top Solid Machined Construction