LBE Unlimited, 556 Bolt Carrier Group, Nickel Boron Coated

The LBE Nickel Boron Complete BCG includes the firing pin, retaining pin, cam pin, extractor and bolt gas rings. Made in the USA.

Features and Specifications:

• Bolt Material 9310 Tool Steel
• Carrier 8620 Steel
• Staked Gas Key
• NiB Coated
• Includes Firing Pin, Retaining Pin, Cam Pin, Extractor, Bolt Gas Rings