Description
This is a 223/5.56/300 Blackout bolt carrier group.
Bolt: Shot Peened; MPI
Bolt Material: 9310 or Carpenter 158 Steel
Bolt Finish: Nickel Boron
Caliber: 223/5.56/300 Blackout
Extractor O-ring: Viton; Mil Spec
Carrier Material: 8620 Steel, Toolcraft Proprietary
Carrier Finish: Nickel Boron
Carrier Design: M16 Full Auto Style
Gas Key Material: 4130 Steel
Cam Pin Material: 4140 Steel
Cam Pin Finish: Nickel Boron
Firing Pin Material: 8740 Steel; Hard Chrome Plated
Manufacturer: Toolcraft
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