steel fishbone style black muzzle brake for .223/5.56 1/2x28 pitch jam nut and crush washer included

effectively reduces recoil cnc precision machined steel, heat treated 1/2" x 28 pitch for .223 black oxide finish compact design crush washer and jam nut included specifications dimensions: 2.85 in x 0.87 in x 0.87 in weight: :4.16 oz material: steel color: black oxide