Colt Parts

Factory Colt M16/M4/AR15 firing pin retaining pin

Factory Colt M16/M4/AR15 magazine catch spring.

Factory Colt M16/M4/AR15 magazine release button.

Factory Colt receiver end plate for M16/M4/AR15 type rifles.

Factory Colt M4 profile, 14.5 inch, 5.56x45mm NATO, carbine length gas system barrel. Complete barrel assembly features M4 feed ramp, barrel nut, fixed front sight tower with sight post, and is threaded 1/2-28 for your choice of muzzle device.

Factory Colt carbine length handguard assembly for M4/AR15 type rifles.

Factory Colt M4 Commando FBI HRT profile, 11.5 inch, 5.56x45mm NATO, carbine length gas system barrel. Complete barrel assembly features M4 feed ramp, barrel nut, low profile gas block, and is threaded 1/2-28 for your choice of muzzle device.

Factory Colt M4 Commando heavy profile, 11.5 inch, 5.56x45mm NATO, carbine length gas system barrel. Complete barrel assembly features M4 feed ramp, barrel nut, low profile gas block, and is threaded 1/2-28 for your choice of muzzle device.

Factory Colt M4 Commando complete 5.56mm semi-auto lower receiver assembly to build your AR15, M16 or M4. Compatible with all mil-spec AR15/M4/M16 upper receivers. Manufactured to truly meet and exceed all Mil Spec standards. Marked with "M4 Commando"...

Factory Colt M4 CQB profile, 10.3 inch, 5.56x45mm NATO, carbine length gas system barrel. Complete barrel assembly features M4 feed ramp, barrel nut, fixed front sight tower with sight post, and is threaded 1/2-28 for your choice of muzzle device.

Factory Colt 4-position receiver extension for M4/AR15 type rifles.