M16 Complete Bolt Carrier Group Nickel Boron Bolt Material 9310 Tool Steel, Carrier 8620 Steel, Staked Gas Key, NiB Coated, Includes Firing Pin, Retaining Pin, Cam Pin, Extractor, Bolt Gas Rings
Specifications:

Type
Model	Complete BCG
Dimensions
Size
Material	8620 Steel
Action	Full Auto
Trigger
Safety
Thread Pattern
Finish	Nickel Boron
Bolt Type	Drop In
Hand
Hammer Type
Capacity