GC_UPC LanTac Dragon Advanced Muzzle Brake 7.62 / .308 Win SilencerCo ASR Quick Mount $125.99 DGN762B-ASR show more like this 3.82 GrabAGun.com GC_UPC LanTac USA Dragon AR-10 Muzzle Brake .308 Win 5/8x24 Black ASR Mount MAP DGN762B-ASR show more like this Free on Guns, $9.99 Accessories, $14.99 Ammo Tombstone Tactical