Aero Precision 5.56 Bolt Carrier Group - Black Nitride
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This high quality bolt carrier group is a valuable addition to your AR15 build.
- M16-cut carrier
- 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
- Chrome lined gas key and firing pin channel
- 5.56 Bolt is machined from Carpenter 158 tool steel
- Shot peened
- HPT/MPI and marked
- Black o-ring insert on extractor
- High quality BCG
- Weight 11.52 oz