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This high quality bolt carrier group is a valuable addition to your AR15 build. You can go with the standard black Bolt Carrier Group or Aero Precision’s upgraded nickel boron Bolt Carrier Group!

Black Bolt Carrier Group:

  • M16-cut carrier
  • Machined from 8620 steel
  • Carrier has forward assist serrations
  • Mil-Spec phosphate coating
  • Properly staked gas key
  • Chrome lined gas key and bolt channel
  • 5.56 Bolt is machined from Carpenter 158 tool steel
  • Shot peened
  • HPT tested/MPI marked
  • Black o-ring insert on extractor
  • High quality BCG
  • Nickel Bolt Carrier Group:
  • No Aero 'A' Logo
  • Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt)
  • Carrier has forward assist serrations
  • Shrouded firing pin
  • Nickel Boron Coating inside and out (Bolt, Carrier, and Gas Key)
  • Forged Mil-Spec gas key attached with Grade 8 hardware and Properly staked.
  • 5.56 Bolt is shot Peened and MPI
  • Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring
  • Tool Steel Extractor
  • High quality BCG


Big Book Catalog, Issue:73, Page:017

AERO PRECISION - AR-15 BOLT CARRIER GROUPS 5.56MM

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3 Item(s)
Online Only
In Stock

Cartridge: 5.56 mm NATO

Finish: Black

Online Only
In Stock

Cartridge: 5.56 mm NATO

Finish: Nickel-Boron

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Online Only
In Stock

Cartridge: 5.56 mm NATO

Finish: Black