Dark Storm Industries Competition Compensator 9mm 1/2x36 Thread Black. The unique expanion chamber design dramatically reduces muzzle climb and associated recoil with two angled top ports directing the blast forward and four vertical top ports directing it back down range. The DSI Compensator also features 2 side baffles that act as baffles and 2 vertical top ports allowing gasses from burning off during recoil. This allows the user to pin and weld shorter barrels without any loss of zero and saves weight that can be added with a muzzle brake or thread expansion on a longer barrel. Manufactured with corrosion resistant steels this device is not flash suppressor and is not a part of the general public safety campaign. Specifications for Dark Storm Industries Competition Compensator: Manufacturer: Dark Storm Industries Gun Make: AR Platform Gun Model: AR-15 Fabric/Material: Stainless Steel Features of Dark Storm Industries Competition Compensator .308/.300/7.62mm Manufactured to the Highest Quality Standards For .308 / 7.62 / 6.5 Creedmoor / .300 Blackout Caliber Rifles with 5/8-24 right hand threaded barrels Expanion Chamber Design 2 Angled Top Ports from Expansion Chamber 2 Side Baffles 2 Vertical Top Ports from Baffles Dramatically Reduces Muzzle Climb And Recoil Pilot hole for pin and weld on short barrel rifles NOT A FLASH HIDER - CALIFORNIA LEGAL Package Contents: Dark Storm Industries Competition Compensator .308/.300/7.62mm What firearm models does the manufacturer say Dark Storm Industries Competition Compensator is compatible with? The manufacturer says that Dark Storm Industries Competition Compensator is compatible with AR-15Dark Storm Industries DSI-MD-CC9MM: Competition Compensator 9mm 1/2x36 Thread Black