9mm Nitride Bolt Carrier Group
8620 Steel Carrier Body with a tool steel extractor bolt carrier group. This Bolt Carrier group is nitride QPQ Treated with a Rockwell rating of 72 giving you the hardness needed to withstand thousands of rounds of usage. It is fully assembled ready to install.
- 8620 Steel Carrier
-S7 Tool Steel Extractor
-4140 Steel Gas Key
-8620 Steel Weight
- 8670 Steel firing pin Hard Chrome Coated
- Mil-Spec fasteners and staked properly