2A Armament Builder Series Billet AR-15 Buffer Tube Assembly

Manufactured by 2A Armament
Manufactured by 2A Armament
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Standard orders will ship out within 2 business days or less. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.



The 2A Armament Builder Series is collection of high-quality AR-15 components at competitive pricing. The 2A Armament AR-15 Billet Buffer Tube Assembly comes with the receiver extension, castle nut, and QD End Plate, so you can be one step closer to finishing your lower receiver. Every part is CNC machined from billet 6061-T6 aluminum to ensure precise dimensions and a tight fit. The buffer tube features 5 positions of adjustability and is designed for Mil-Spec diameter carbine stocks and recoil buffers. The castle nut and end plate feature lightening cuts to reduce weight and a unique aesthetic. The end plate has a quick detach sling swivel slot and self-aligns with the buffer detent. Get multiple stock components at once with the 2A Armament Builder Series AR-15 Buffer Tube Assembly.

  • Machined from U.S.A Sourced 6061-T6 aluminum
  • Hardcoat anodized
  • Lightweight and unique design
  • 5 position Mil-Spec buffer tube
  • Carbine length
  • Weight Buffer Tube Only: 3.6 oz
  • Weight Assembly: 4.3 oz

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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Brand2A Armament
FinishHardcoat Anodized
MaterialAluminum - 6061-T6
Weight4.3 oz

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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