Description
Nickel Boron M16 Bolt Carrier Group
- 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
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