Since its introduction in the late-1950's the AR-15 has been the standard by which all other assault rifles are judged. The AR-15's straight-line stock design eliminates the fulcrum created by traditional bent stocks, reducing muzzle climb. The aircraft grade aluminum receiver is lightweight and highly corrosion-resistant and the synthetic stock and grips do not warp or splinter. The AR-15's direct impingement gas system is fast-acting and reliable whether housed in the US Military's M-16 or a civilian AR-15. This rifle features a 20-inch barrel with a 1-in-12 twist, standard A1 iron sights, a triangular forearm, and a left-side toggle standard safety and includes an M16 bi-pod, an M8-A1 knife and sheath, a cleaning kit and manual, and two 30-round magazines with mag pouch. Its synthetic stock, its metal, and its bore are all in very good condition.