Description
COLT M4 CARBINE LOWER RECEIVER ASSEMBLY
Colt complete lower receiver factory assembled 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. Includes factory staked castle nut and H buffer, built in sear block. Will come with DoubleStar ACE Socom carbine stock installed.
