This machined 7.25" x 1.5" Barrel extension takes its looks from the Browning 1919 machine gun barrel. It is threaded 1/2x28 for the AR-15, KEL TEC PLR-16, PLR-22 or rifle with 1/2x28 threads. It provides more accuracy and gives your weapon a more tactical look. It also acts as a counter weight and aids to keep the muzzle down under rapid fire. With 9 machined ports at the end, it acts as a muzzle break as well. for .223, 5.56 & 9mm. Fits standard 1/2x28 threaded barrels.