Rifle Parts

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.

Factory Colt Rifle Buffer for AR15/M16 full length rifles.

Factory Colt rifle length gas tube for M16/AR15 style firearms. Stainless steel construction to mil-spec.

Factory Colt tungsten 1.5 ounce buffer weight, used in H, H2 and H3 buffers.

The Magpul MBUS (Magpul Back-Up Sight) is a low-cost, color injection molded, folding back-up sight. The MBUS Front Sight is adjustable for elevation and fits most 1913 Picatinny-railed hand guards, but is specifically tailored to the AR15/M16 platform...

The Magpul MBUS (Magpul Back-Up Sight) is a low-cost, color injection molded, folding back-up sight. The dual aperture MBUS Rear Sight is adjustable for windage and fits most 1913 Picatinny rail equipped weapons, but is specifically tailored to the...

The Matech Picatinny Backup Iron Sight is the standard issue BUIS for all new and fielded U.S. Military M4 carbines and M16 flat top rifles. Rigorously tested at Fort Benning and Aberdeen Proving Grounds, this sight has the strength, durability, and...