ULTRADYNE Pegasus Tanker Compensator 223 Rem,5.56 Nato Black Nitride 416 Stainless Steel 1/2"X28 tpi Made In The USA, The Pegasus Has Been meticulously engineered To Provide Superior Recoil Reduction And Neutralize Muzzle Rise With a Smooth, Balanced Release Of Blast Energy In a Tanker-Style Compensator. Compensation Ports strategically Divert Gases Away From And Out Of The Shooters Line Of Sight While The Progressive 90 Side Ports Vent Com-busting Gases at intervals That Spread Out The Recoil Impulse For Efficient, Accurate Follow-Up Shots. A Timing Nut Is Included For Easy Installation. Model: Pegasus Material: 416 Stainless Steel Thread Pattern: 1/2"-28 tpi Finish: Black Nitride