Home / Bolt Carrier Groups / Lantac / Lantac Bolt Assembly .223/5.56 Black Nitride 01-UP-556-NIT-BA

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Lantac Bolt Assembly .223/5.56 Black Nitride 01-UP-556-NIT-BA

Lantac Bolt Assembly .223/5.56 Black Nitride 01-UP-556-NIT-BA

Lowest Listed Price

$90.99

MSRP

$90.99

Savings

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1 Stores

Updated

Aug 26, 2026

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Specifications

Brand

MPN

01UP556NITBA

UPC

712038709960

Description

Replacement Carpenter 158 Bolt AssemblyHard Ground Critical DiametersS110 Shot Peened, Heat Treated 15N 89-90.5 Hardness. Magnetic Particle Inspected. NiB or Black QPQ Finished. Complete Assembly. Made in the USA. Lantac Bolt Assembly .223/5.56 Black Nitride 01-UP-556-NIT-BA

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