Premium AR-15 5.56 Nickel Boron Bolt Carrier Group With Carpenter 158

Premium AR-15 5.56 Nickel Boron Bolt Carrier Group With Carpenter 158 Bolt



Caliber: 5.56/.223

Finish: Nickel Boron Coating

Bolt Steel: Milspec Carpenter No. 158

Shot Peened Bolt

High pressure tested

Mag particle inspected

Gas Key Hardened to USGI Specifications

Gas Key Grade 8 Hardened Fasteners

Gas Key Staked Per Mil-Spec

Tool Steel Extractor

Extractor Spring

Extractor O-ring Insert



For packaging considerations, BCG will be packed dry. Nickel Boron's natural surface lubricity is not a substitute for normal rifle lubrication. Please follow all manufacturers recommendations for lubrication. It is possible to discolor the finish with dirty ammo or prolonged use without cleaning.

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