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MicroBest BCG 556 Chrome Phos Extract C158 MPI

Brand: MicroBest
Product Code: 4514602
Availability: In Stock
$150.00
$102.95

PRE-PRDER, Product ships to you by TUESDAY 10/3/23

Bolt Carrier:
Heavy Duty M16 design
8620 steel heat treated
Gas Key Material - 4140 heat treated
Grade 8 Gas Key Screws, Staked
Chrome lined gas key and carrier interior
Hard chrome finish

Bolt Subassembly:
Bolt: 158 Carpenter Steel, shot peened per mil spec
MPI tested
Ejector: Machined 4140 mil spec
Extractor: 4340 mil spec, mil spec finish
Extractor Pin: S7 mil spec

Extractor Spring: Sprinco mil spec
O-Ring: Mil Spec
Gas rings (3): Mil spec
Hard chrome finish

Cam Pin:
4340 mil spec
Hard chrome finish

Firing Pin:
Mil spec firing pin made from centerless ground 8740 steel, hard chrome coated

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