Colt M4

Colt M4 to M5 PDW 5.56 x 45mm 10.3" Heavy Bbl Matte Black Conversion Kit CM556-10H-CK

Colt M4 to M5 Carbine 5.56 X 45mm 16.1" Bbl Matte Black Conversion Kit CM556-16-CK

Colt M4 to M5 Carbine 5.56 x 45mm 14.5" Heavy Bbl Matte Black Conversion Kit CM556-14H-CK

Colt M4 to M5 Commando 5.56 x 45mm, 11.5" Heavy Bbl Matte Black Conversion Kit CM556-11H-CK

Colt 223 Rem/ 556 NATO M4 Feed Ramps Upper Black

Colt M4 Bolt Repair Kit

Colt A4 Butt Cap Screw Steel for AR-15 M4 Colt M16 Compatibility

Colt Ar-15 M4 Magazine Release for Colt Ar-15 M4 Receivers

Colt Ar-15 M4 Bolt Catch Matte Finish Compatible with Colt Receivers

Colt Ar15a4 Extractor Buffer For Colt Mi16 Ar15 m4 Compatibility

Colt Ar15a4 Bolt Catch Plunger Ar-15 M4 Compatibility

Colt Ar15a4 Firing Pin Retaining Pin for Ar15 M4 Builds

M4 Auto Auto Sear Bushing

Colt M7 Bayonet, NO Scabbard - Good Condition, Fits M16\'s, M4\'s , AR-15\'s, Galil\'s, Gallants W / Bayonet Lugs, Etc.

Ar-15 M4cqb 5.56 Barrel 10.3in - M4cqb Replacement Barrel Stripped 10.3in

Colt LE6921SOCOM 5.56mm 14.5" Heavy Bbl KAC Rail Matech BUIS Matte Black Upper Receiver Conversion Kit LE6921SOCOMCK

Colt AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 14.5" Barrel

Colt LE6920EPRII 5.56mm 16.1" Bbl Sights Matte Black Upper Receiver Conversion Kit LE6920-EPRII-CK

Colt Firearms LE6920CK-NHG Upper Kit Black 5.56NATO/.223Rem 16-inch