Ultradyne USA Pulse, Compensator, 308 Winchester, 7.62MM, Black UD10980 The Ultradyne Pulse provides exceptional performance in a compact design. Gases are strategically diverted away and out of the shooters line of sight. Pulse strongly reduces recoil and minimizes muzzle rise helping the shooter get back on target quicker to ensure a more accurate followup shots. The Pulse is proof that good things do come in small packages! A timing nut is included for easy installation.