The CMMG SV muzzle compensator is an effective single port brake designed specifically for AR-15 rifles. The large port presents a broad surface for gasses to impact against, which keeps the muzzle down and the sights on target. Installs easily to any barrel threaded with 1/2"-28 threads.
Features and Specifications: Manufacturer Number: 55DA577 Caliber: 5.56mm and .223 Threads: 1/2"-28 Includes crush washer
