- BOLT: Made From 9310 Steel
- BOLT FINISH: Phosphate
- CARRIER: Carrier Assembly Made From 8620 Steel
- CARRIER FINISH: Phosphate, Chrome Lined
- TREATMENT: Non RF85
- COMPATIBLE: AR-15 Platform, 5.56, .223, .300 BLK
- ADDITIONAL SPECS/NOTES: Drop In Ready, MPI Tested
The M16 5.56/.223/ .300 AAC Complete Bolt and Carrier Group is Phosphate coated and Chrome Lined. The Carrier is made from 8620 steel, and the Bolt is made from 9310 steel and Phosphate coated, MPI Tested. The 223 Bolt and Bolt Carrier Assembly comes complete with Cam Pin, Firing Pin and Firing Pin Retainer.