AoA 308 Win 18″ Heavy Profile Barrel



Availability: In stock

AoA 308 Win 18" Heavy Profile Barrel

100% Made in USA

Our 308 Win 18" HeavyProfile Barrel is machined from 4150 Chrome Moly Vanadium (CMV) bar stock, features an M4 extension and feed ramps, and is completed with a QPQ Nitride Corrosion Resistant Finish.  The M4 Extension and barrel are independently coated to ensure long lasting torque values.  This 308 Win 18" Heavy Profile barrel is configured with a rifle-length gas system, and accepts a .750 gas block.

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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.

SKU AOA308007M
Manufacturer Leading U.S. Manufacturer
Caliber 308 Winchester
Platform AR10 / DPMS
Finish QPQ Nitride
Gas System Rifle-Length; .750 Diameter
Twist 1:10 inches
Material 4150 CMV
Muzzle Threads 5/8 x 24 TPI
Weight 53 oz

Arm or Ally is a stocking dealer for all Faxon Firearms, Ballistic Advantage, HOLOSUN, Toolcraft, Elftmann Tactical, Timney, CMC Triggers, HIPERFIRE and named the #1 Overall E-Commerce Dealer for Aero Precision Products in 2020!  See our growing inventory of AR Parts, and Reloading Components.

Weight 56 oz
Dimensions 19 × 2 × 2 in
Barrel Length


Gas Block Diameter


Gas System


Muzzle Thread

5/8 x 24


308 Win

Barrel Finish

QPQ Nitride


Arm or Ally


4150 Chrome Moly Vanadium



Part Type

Barrel, Upper Receiver Parts

Twist Rate


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