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Mfg Item #: SCO AC142
Caliber: 5.56mm - Thread: 1/2x28 - This 3-port muzzle brake is compatible with the Specwar 5.56 and 7.62 and Harvester Big Bore/Omega ASR mounting system. It offers one hand on one hand off attachment/detachment. The 3-port design effectively reduces felt recoil and muzzle climb.