Colt AR-15

The Colt AR-15 is a product line of magazine-fed, gas-operated, autoloading rifles manufactured by Colt's Manufacturing Company ("Colt") in many configurations. The rifle is a derivative of its predecessor, the lightweight ArmaLite AR-15, an automatic rifle designed by Eugene Stoner and other engineers at ArmaLite in 1956.
Colt currently owns the AR-15 trademark and uses it for its line of semi-automatic AR-15 rifles.