ENGRAVED AR-15 Bolt Carrier Group (BCG) – SPIDER
5.56 NATO/.223 WYLDE/.300 Blackout
Specifications:
- .223 WYLDE/5.56 NATO/.300 Blackout
- M16 Cut
- 9310 Steel Carrier
- Carpenter 158 Steel Bolt
- 4140 Steel Extractor
- Mil-Spec O-Ring
- Mil-Spec Gas Rings
- 4140 Steel Cam Pin
- 8740 Steel Firing Pin with Hard Chrome Finish
- Magnetic Particle Inspected
- Proudly made in the U.S.A.