Shop › SCO ASR MUZZLE BRAKE 11/16"-24 458 SCO ASR MUZZLE BRAKE 11/16"-24 458 $79.90 SilencerCo ASR 458 Muzzle Brake, 11/16X24 AC1961 Quantity: Add To Cart Added! SilencerCo ASR 458 Muzzle Brake, 11/16X24 AC1961