2A Armament Builder Series Mil-Spec AR-15 Bolt Carrier Group

Manufactured by 2A Armament
Manufactured by 2A Armament
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NOTE: Limit 1 per household. Quantities exceeding 1 will not allow checkout.



The 2A Armament Builders Series AR-15 Bolt Carrier Group is designed to give you a quality product at an affordable price. This AR-15 BCG features a carrier machined from 8620 steel while the bolt is made from 9310 steel. Every component is heat treated and QPQ Nitride finished for long lasting durability and corrosion resistance. The bolt head is magnetic particle inspected to ensure all the dimensions are within Mil-Spec. The gas key features grade 8 screws and are properly staked. If you are looking to build a reliable and affordable AR-15, the 2A Armament Builders Series components are the way to go.

  • Nitride finish
  • 8620 steel carrier
  • 9310 steel bolt
  • MPI
  • Heat treated
  • M16 profile
  • Staked gas key screws

2A Armament is not just another firearms manufacturer. They are committed to exceptional craftsmanship and quality in the products they make. State of the art manufacturing paired with hand finishing of every part result in firearms with unmatched fit and finish.
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Bolt FinishSalt Bath Nitride
Bolt Material9310 Steel
Brand2A Armament
Caliber Gauge5.56 NATO
Carrier FinishSalt Bath Nitride
Carrier Material8620 Carpenter Steel
Carrier StyleM16 Bolt Carrier
High Pressure TestedUntested
Magnetic Particle InspectMagnetic Particle Inspected

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see www.p65warnings.ca.gov

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