The Bushmaster XM-15 16" Heavy Barrel Carbine provides heavy-duty performance whenever duty calls. The heavy profile 16" chrome moly vanadium steel barrel is manganese phosphate-finished to insure protection against corrosion and rust, and the carbine features an A2 flash hider and a 6-position telescoping stock. The upper and lower receivers are machined from 7075-T6 aircraft aluminum forgings for light weight and added strength. The carbine ships with operator safety manual, chamber flag, sling, and a 30-round magazine.