Description
Description
- 2.23/5.56,
- M16 Cut
- Nickel Boron Polished BCG Steel : 8620
- Bolt: 9310
- Extractor: 4140
- Gas Pin Staked
- O-ring: Rubber
- Gas rings: Stainless Steel
- Cam pin: 4140
- Firing pin: 4140
MPN#: BCG-15-223-00-007
