Microbest AR15 5.56 C158 MPI BCG

(2 customer reviews)


03/08/24: Chrome variant includes PHOS GAS KEY + EXTRACTOR. NO OCKs fasteners.

This product has MULTIPLE options. 

SKU: PB-MB-AR15-BCG Categories: ,


Coating Options:

  • Chrome w/ phosphate extractor: 01/01/24 batch includes phosphate GAS KEY + EXTRACOTR
  • Phosphate chrome lined

Mil Spec Carrier

  • 8620 Tool Steel
  • Full Auto M-16 cut

Mil-Spec Bolt

  • C158 Steel
  • Shot Peened
  • High Pressure Tested (HPT) – INDIVIDUALLY TESTED
  • Magnetic Particle Inspected (MPI) – INDIVIDUALLY TESTED

Mil Spec Extractor – PHOSPHATE

  • 4140 Steel
  • 5-coil Sprinco Extractor Spring
  • O-ring Black Extractor Insert Included

Mil Spec Gas Key

  • 4130 Steel
  • Grade 8 Hardware
  • Properly Staked

Additional information


Chrome, Phosphate Chrome Lined



2 reviews for Microbest AR15 5.56 C158 MPI BCG

  1. ian.davis27 (verified owner)

    I ordered the chrome bolt carrier group phosphate extractor, shipping was fast and looked great upon initial inspection. Solid product from a solid business.

  2. John Kane (verified owner)

    Great product 👍

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