Brownells has been working on a top quality option for those looking for a buttstock for a XM177 clone or early style AR build, and have teamed up with B5 Systems to bring this stock to market. With close attention paid to every detail these Mil-Spec stocks are a rugged, durable polymer construction. Mil-Spec Polymer construction Color: Black The Brownells CAR-15 stock gives you a quality, accurate, dependable, American made option for you AR or clone build. Mfg: B5 Systems