Colonel Mustard muzzle brake. Whilst made overseas, the quality of these brakes is almost on a par with the brakes we carry from our Canadian-made suppliers. Screws onto standard AR-15/M4/M16 ½" x 28 threaded barrels (with .223 / 5.56 bore). Includes crush washer and jam nut. CMC1-AS-BK223MB.
Part Number: CMC1-AS-BK223MB