Shop › SCO ASR MUZZLE BRAKE 5/8"X24 .30CAL SCO ASR MUZZLE BRAKE 5/8"X24 .30CAL $79.90 sold out SilencerCo 7.62 Muzzle Brake, 7.62MM, Fits Specwar, Omega, Harvester AC591 Sold Out Added! SilencerCo 7.62 Muzzle Brake, 7.62MM, Fits Specwar, Omega, Harvester AC591