Description
Bolt Carrier Group for AR-15:
- M16 SPEC (FULL AUTO READY)
- Milspec Carpenter No. 158® steel bolt
- Shot Peened Bolt
- Mag particle inspected
- 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