JL Billet V.P.R. Muzzle Brake, 5.56/223. Machined from 303 stainless steel using a 5-axis CNC process to achieve proper port angles. Feature includes 1/2-28 threads for AR-15 platforms. Port angles start with a 15 degree back angle and decrease as gases dissipate moving forward to reduce recoil and muzzle rise. Machined finish.