Aero Precision 5.56 Bolt Carrier Group Black Nitride
This high quality bolt carrier group is a valuable addition to your AR15 build.
Machined from 8620 steel
Carrier has forward assist serrations
Black Nitride Finish - advanced lower friction coating that minimizes the need for lubricants and cleaning
Properly staked gas key
5.56 Bolt is machined from Carpenter 158 tool steel
HPT tested/MPI marked
Black o-ring insert on extractor
High quality BCG
Cancer and Reproductive Harm
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