Colt M4 Carbine Lower Receiver Assembly
ALL Semi-Auto Colt Rifle Receivers will be marked “Carbine” as of Q4 2020
Factory Colt complete 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.
This item is a serialized part, considered a firearm and requires transfer through a FFL