Ultradyne Pulse Compensator 7.62x39mm Black Nitride 416 Stainless Steel 5/8"x24 Tpi 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. A Timing Nut Is Included For Easy Installation. Model: Pulse Material: 416 Stainless Steel Thread Pattern: 5/8"-24 tpi Finish: Black Nitride