NICKEL BORON AR10 / .308 BOLT CARRIER GROUP - MPI BOLT

by XTS
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$124.95

Bolt

Carpenter 158 Steel

Heat treated per Mil-Spec Requirements

Shot Peened per Mil-Spec Requirements

MPI Tested Material

Black Nitride Treated

Multi-caliber bolt designed to function with .308, 7.62x51, 6.5 Creedmoor, .338 Federal and other .308 based cartridges.

Bolt Carrier

8620 Steel

Black Nitride Treated

Black Nitride Treated Bore

M-16 Style with more mass for better functioning in semi or full auto rifles

Gas Key

4130 Steel

Black Nitride Treated

Gas Key Screws - 4140 Steel properly staked per Mil-Spec requirements

Cam Pin

4340 Steel

Heat treated per Mil-Spec Requirements

Black Nitride Treated

Extractor

Aircraft Quality E4140 Steel

Heat treated per Mil-Spec Requirements

Shot Peened per Mil-Spec Requirements

Manganese Phosphate Coated per Mil-Spec Requirements

Firing Pin

AISI 8740 Steel

Chrome Coated

Made in the USA!