One of Bushmaster's most popular carbine models, the M4 Type features a distinctive military barrel profile and a six-position telestock, making it great for 3-gun match shooting, home defense, and law-enforcement use. The 5.56mm/.223 Rem. caliber 16" barrel is chrome-lined in both bore and chamber for long wear life and ease of maintenance. For control of muzzle flash and muzzle rise in rapid fire, a birdcage-type suppressor is factory installed. A mil. spec. manganese phosphate outer coating insures protection against corrosion or rust on the barrel and all critical steel parts of the weapon. A six-position telescoping buttstock offers light weight, carrying ease and quick handling. The telestock, pistol grip, and two-piece handguards are all molded of strong, black thermoset composite material and the handguards are internally shielded against barrel heat build-up. The dual aperture M16-A2 rear sight system on these carbines offer both windage and elevation adjustment calibrated in meters. Includes a 30-round magazine and a detachable carry handle.