Aero Precision Ar15 Black Nitride Bolt Carrier Group

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DESCRIPTION
This high quality bolt carrier group is a valuable addition to your AR15 build.
Features:
Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt)
Carrier has forward assist serrations
Black Nitride Finish - advanced lower friction coating that minimizes the need for lubricants and cleaning
Properly staked gas key
Shot peened
HPT tested/MPI marked
Black o-ring insert on extractor
High quality BCG