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Microbest Mil-Spec C158 HPT/MPI 5.56 Bolt Carrier Group – Phosphate/Chrome-Lined

$149.95

Description

The Microbest BCG has been designed from the ground up with the most avid shooters in mind, using only the best materials available on the market today.  The bolt assembly is machined from Carpenter No. 158® steel, shot-peened, MP marked, HP tested, and has a tool steel extractor that is machined from bar stock. Made in the U.S.A. and covered by a lifetime warranty, you can count on this BCG for a lifetime of service.

Features:

  • 4340 Extractor spring, mil-spec insert and extractor retainer pin in mag phosphate
  • Mag phosphate ejector
  • Mil-spec stainless gas rings
  • 8620 carrier in FA profile chrome lined
  • 4130 gas key with grade 8 retainers and sealed
  • 4340 cam pin in mag phosphate
  • 8740 firing pin in hard chrome
  • 1038 retaining pin in mag phosphate

Additional information

Weight

15 oz

Dimensions

7.5 × 1 × 1.25 in

Bolt Material

Carpenter 158 Steel

Cartridge Compatibility

.223/5.56 NATO/.300 BLK

Finish

Mag Phosphate

Carrier Profile

M16

High Pressure Tested

Individually HP Tested

Magnetic Particle Inspected

Magnetic Partical Inspected

Platform

AR-15

Bolt Finish

Mag Phosphate

UPC

14699

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