AoA 5.56 NATO 11.5″ Government Profile Barrel



Availability: In stock

AoA 5.56 NATO 11.5" Government Profile Barrel

100% USA Made

All NFA / ATF Rules Apply.

Our 5.56 NATO 11.5" Government profile barrel is machined from 4150 Chrome Moly Vanadium (CMV) bar stock, M4 extension and feed ramps, and features a QPQ Nitride Corrosion Resistant Finish.  The M4 Extension and barrel are independently coated to ensure long lasting torque values.  This 5.56 NATO 11.5" barrel is configured with a carbine-length gas system, and accepts a .750 gas block.

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SKU AOA556023M
Manufacturer Leading U.S. Manufacturer
Caliber 5.56 NATO
Platform AR15
Finish QPQ Nitride
Gas System Carbine; .750 Diameter
Twist 1:7 inches
Material 4150 CMV
Muzzle Threads 1/2 x 28 TPI

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Weight 24 oz
Dimensions 12.5 × 2 × 2 in
Gas Block Diameter


Gas System


Muzzle Thread

1/2 x 28


Arm or Ally

Barrel Length





4150 Chrome Moly Vanadium


5.56 NATO

Barrel Finish

CPQ Corrosion Resistance

Twist Rate


Part Type

Barrel, Upper Receiver Parts

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