Colt CAR-15 Country USA Type Assault rifle Manufacturer Colt Introduction 1966 Specifications Weight Empty: 5.2 lb. (2.36 kg) Loaded w/30 round: 6.22 lb. (2.82 kg) Length Buttstock retracted: 28.3 in. (719 mm) Buttstock extended: 31 in. (826 mm) Barrel length 10 in. (254 mm) Cartridge 5.56x45mm NATO Action Direct impingement Rate of fire 700 to 900 rounds per minute Muzzle velocity 2,750 ft/s (838 m/s) Feed system Various STANAG Magazines. Sights Rear: Flip aperture Fore: Post

The Colt Automatic Rifle-15 Military Weapons System or CAR-15 was a family of AR-15 and M16 rifle-based firearms marketed by Colt in the late 1960s and early 1970s. Due to their compact size, the short-barreled Colt Commando and XM177 versions were the only members of this family to be issued to the U.S. military after the Vietnam War.

The CAR-15 name was an attempt to re-associate the AR-15 name with Colt, since the AR initially stood for ArmaLite, the original manufacturer. Colt later abandoned the CAR-15 concept, but continued to make variations, using the M16 brand for military-oriented models and the Colt AR-15 brand for law enforcement and civilian models. However, in present usage, CAR-15 is used as a generic name for carbine-length M16 and AR-15 variants.

Specifically, Colt Commando currently refers to the ultrashort 11.5-inch barrel assault rifle of the Model 733 series, marketed as the M4 Commando (formerly M16A2 Commando). By comparison, the M4 Carbine has an 14.5-inch barrel, while that of the M16 assault rifle is 20 inches.