Description
M16 Bolt Carrier Group
- Milspec Carpenter No. 158® steel bolt
- Shot Peened Bolt
- Gas Key Hardened to USGI Specifications
- Gas Key Grade 8 Hardened Fasteners
- Gas Key Staked Per Mil-Spec
- Tool Steel Extractor
- Extractor Spring
- Extractor O-Ring Insert
- 223/5.56/300 Blackout