AoA 5.56 NATO 11.5" Government Profile Barrel

SKU: AOA556023M

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AoA 5.56 NATO 11.5 Government Profile Barrel

The AoA 5.56 NATO 11.5″ Government Profile Barrel is manufactured by a leading U.S. barrel manufacturer, machined from 4150 Chrome Moly Vanadium (CMV) steel, features M4 feed ramps, and a deep black, classic QPQ Nitride corrosion-resistant finish. M4 Extensions and barrels are finished separately before being torqued to their final specifications. The AoA 5.56 NATO 11.5″ Government Profile Barrel is configured with a Carbine gas system and a .750 gas block journal. What more could you ask for from a barrel with this much value?

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What is the Arm or Ally Brand?

Arm or Ally branded products are manufactured in the same facilities and to the same standards as many popular, high-end brands. Our promise to you is a high-quality product at a more affordable price. 100% American made products, backed by the same defect-free warranty as every other product we offer.

Product Information

Gas Block Diameter


Gas System


Muzzle Thread


Barrel Length





4150 Chrome Moly Vanadium


5.56 NATO

Barrel Finish

QPQ Nitride

Twist Rate


Part Type

Barrel, Upper Receiver Parts


Leading U.S. Manufacturer

Arm or Ally

Arm or Ally is a stocking dealer for all Aero Precision, Faxon Firearms, Ballistic Advantage, HOLOSUN, Toolcraft, Elftmann Tactical, Timney, TriggerTech, HIPERFIRE and named the #1 Overall E-Commerce Dealer for Aero Precision Products in 2020!

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