AO Precision Bolt Carrier Assembly Commercial AR-15 223 Remington Matte

Product #: 844509 AO Precision #: 00-BCABOA-AR15-00D-0015-X
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  • Information

The AO Precision AR-15 bolt carrier assembly comes fully assembled and ready to be dropped in. The carrier body is machined from 8620 steel, heat treated, MP inspected. The carrier's bore is hard chromed for increased corrosion resistance and reliability. The bolt is machined from Carpenter 158 tool steel, shot peened to relieve stress, and MP inspected. The bolt and carrier are both treated with a Mil-Spec phosphate coating for its durability and corrosion resistance. AO Precision Bolt Carrier Group features a gas key tube that is hard chromed and properly torqued and staked screws.

AO Precision is a major supplier for AR-15, M16, and M4 parts contracts, providing upper receivers, bolts, carriers, and barrel extensions. In addition to the AR-15, M16, and M4, AO Precision supplies parts for the M249, M240 and USSOCOM suppressor components.

Technical Information:


  • 223 Remington/ 5.56x45mm Nato
  • Carpenter 158 Tool Steel
  • Shot Peened
  • MP Tested
  • Mil-Spec Phosphate Finish


  • Commercial Bolt Carrier Type
  • 8620 Steel
  • Shot Peened
  • MP Tested
  • Chrome Lined Firing Pin Channel and Gas Key
  • Gas Key Screws Torqued and Staked
  • Mil-Spec Phosphate Finish
  • Semi-Auto Carrier Design
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