Advanced Armament Corporation Msr Bolt Carrier Group, Packaged, 5.56/300blk

I needed a bcg for my 300blk build. I figured why not get one from the manufacturer that invented the round. It fires and extracts great and the nib cleans easy. I would recommend this product for anyone building a 300blk.

This is my second AAC bolt carrier group and will not be my last, Besides looking good, the coating is tough and show very little signs of use and it is the full auto type that works with my Franklin Armory AR2 ECHO trigger.

I have complete confidence in this AAC product. Installed in a Radical Firearms 300blk 10.5in upper, ahead of a standard carbine buffer/spring, and coated thinly with white lithium grease, it performs perfectly and cleans VERY easily.