Factory Colt complete bolt carrier group assembly for your AR15, M16 or M4 is the only BCG manufactured to truly meet and exceed all Mil Spec standards. Compatible with full-auto or semi-auto receivers. The bolt carrier and bolts are MPI tested & marked to give you ultimate confidence in your weapon system.
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Perfect in every way, original Colt OEM, great price, and fast delivery. Thank You, Colt Parts!
This BCG is identical to the BCG that came in my Colt AR15A4 purchased earlier this year. Carrier is marked “C” and the bolt itself is very lightly etched with “MPC”. The carrier has the nice slick phosphate finish unlike some other second-tier manufacturers.
Carrier is marked with a “C” and bolts are marked “MPC”. Chrome lined carrier. Looks exactly like the BCGs in my Factory Colt Rifles, except the MPC is easier to see. It’s good to go.