F-1 Firearms DuraBolt DB-556-DLC, Bolt Carrier Group Assembly, .223 Remington/556NATO, DLC Finish, True Black

The F-1 Firearms DuraBolt Black Nitride direct impingement full auto rated M16/M4 bolt carrier group" for use in AR15 platforms" is compatible with MIL-SPEC receivers and associated components. The bolt carrier and bolt are ground after heat treat to ensure tolerances.

DLC Coated, True Black

Carpenter 158 bolt that is ground after heat treat

8620 Steel Construction

Finish: DLC
Manufacturer: F-1 Firearms
Manufacturers Part Number: DB-556-DLC
Model: DuraBolt
Type: Bolt Carrier Group
Sub Category: Bolts & Bolt Carrier Groups
Color: Black

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