Aero Precision Epsilon 762, Muzzle Brake, 308 Win/7.62MM, Black, 5/8X24 APVG100021A Designed for the discriminating shooter and professional end-users" VG6 Precision's EPSILON affords you the best muzzle control and recoil mitigation the industry has to offer. Its performance is matched only by the amazing look of this device.