This is an excellent example of a late production fully automatic, commercial M16A1 rifle as manufactured by the Colt Firearms Division. These original Colt fully automatic M16 series rifles are very desirable as they were produced exactly as their military counterpart using the same military grade, factory original parts. They were given their own special commercial serial number designation in the 9 million range. This example was produced as a Colt M16A1 series with the forward assist and the two position flip rear sight. The chrome lined barrel is stamped: "C MP 5.56 NATO 1/7". The magazine well is marked "COLT/M16A1/CAL. 5.56 MM./9496043" and "COLT FIREARMS DIVISION/COLT INDUSTRIES/HARTFORD CONN./U.S.A." next to the three-position "SAFE/SEMI/AUTO" selector. It is fitted with the late style M16A2 plastic components with the buttstock storage compartment. Magazine absent.