We pulled ten AR-15 Muzzle Brakes from our AT3 warehouse. Tested them. These are round one results! … ( VG6 Epsilon 556; AT3 3-Port Muzzle Brake; Dead Air Armament KeyMo Brake; Ultradyne USA Apollo Max; Fortis RED 556; Timber Creek Outdoors Heart Breaker; Surefire SOCOM AR-15 Brake; CMMG AR-15 Zeroed; Spike’s Tactical Dynacomp Extreme Muzzle Brake )