12.5" Colt M4/PRI Front Flip/Allen Eng Collar (AEM5/OCM5)

Looking for a different upper to use with your AEM5/OCM5?

-NEW M4  Colt upper (no cage code)

-NEW 12.5" Colt gov barrel 5.56 barrel 1/7 Chrome lined bore and chamber. Carbine length gas. Phosphate finish.

-NEW PRI front sight/gas block

-NEW Carbine length gas tube

-NEW Mil Spec delta ring and barrel nut and end cap

-NEW KAC M4 RAS rail with panels

-NEW Allen Engineering 3 piece collar system that interfaces with the front sight block for OCM5/AEM5

UPPER ONLY WORKS WITH Allen Engineering AEM5/Otter Creek Labs OCM5

NO BCG OR CH INCLUDED / NO SUPPRESSOR INCLUDED

ALL NFA RULES APPLY