Colt M4 Carbine 556 AR-15

Colt M4 Carbine 223 Rem/5.56 NATO Rifle, Black - CR6920

Colt M4A1 Socom .223 Rem/5.56 AR-15 Carbine - LE6920SOCOM

Colt M4 Carbine MPS 5.56 AR-15 Rifle, Black - CR6920MPS-B

Colt .223 Rem/5.56 AR-15 Rifle - AR15A4

Colt M4 Monolithic .223 Rem/5.56 Semi-Automatic AR-15 Rifle, Blk - CR6940

Colt Firearms AR15A4 5.56 NATO 20 Barrel 30-Rounds

Colt Firearms M4 Carbine LE6920 Black .223/5.56 NATO 16-inch 30Rd