Ultradyne Pegasus Tanker-Style Compensator 6.5mm 5/8x24 Black Nitride. Progressive 90 degrees side ports vent combusting gases at intervals that spread out the recoil impulse for efficient accurate follow-up shots. Like all Ultradyne muzzle devices a timing nut is included for easy installation. Specifications for Ultradyne Pegasus Tanker-Style Compensator: Manufacturer: Ultradyne Color: Black Finish: Black Nitride Fabric/Material: 416 Stainless Steel Threads per Inch: 5/8x24 Gun Make: AR Platform Condition: New Features of Ultradyne Pegasus Tanker-Style Compensator: Progressive 90 Degree Ports spread out recoil energy to create a smoother recoil event Tanker-Style Design Shrouded Timing Nut Included Pairs easily with the Dynamount Sighting System 416 Stainless Steel with Ultra Rugged SB Nitride Coating l Package Contents: Ultradyne Pegasus Tanker-Style Compensator What firearm models does the manufacturer say Ultradyne Pegasus Tanker-Style Compensator is compatible with? The manufacturer says that Ultradyne Pegasus Tanker-Style Compensator is compatible with AR-10 AR-15Ultradyne UD10240: Pegasus Tanker-Style Compensator 6.5mm 5/8x24 Black Nitride