Arm Or Ally 5.56 NATO 11.5″ Government Profile Barrel
The Arm Or Ally 5.56 NATO 11.5″ Government Profile Barrel is designed to deliver professional-grade performance and exceptional durability for your AR-15 build. Manufactured by a top-tier U.S. barrel maker, this barrel is machined from rugged 4150 Chrome Moly Vanadium (CMV) steel and finished with a deep black QPQ Nitride treatment for excellent corrosion and wear resistance.
This barrel features M4 feed ramps for improved reliability and feeding, especially during high rates of fire. The 11.5″ length makes it ideal for compact AR-15 pistol or SBR configurations, offering a balance between maneuverability and ballistic performance. A .750 gas block journal ensures compatibility with most standard gas blocks, and the Carbine-length gas system is optimized for dependable cycling in shorter barrel setups.
Each barrel undergoes a precise assembly process where M4 extensions and barrels are finished separately before being torqued together to exacting specs. This added step ensures maximum durability and alignment. Whether you’re upgrading your current rifle or starting a new build, this barrel offers excellent value without sacrificing quality.
Specifications:
- Caliber: 5.56 NATO
- Length: 11.5″
- Profile: Government
- Gas System: Carbine
- Gas Block Journal: .750
- Barrel Material: 4150 Chrome Moly Vanadium (CMV)
- Finish: QPQ Nitride
- Feed Ramps: M4
- Made in the USA
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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.
...unless you like paying for their marketing and fancy packaging!
Product Information
| Manufacturer | Leading U.S. Manufacturer |
|---|---|
| Gas Block Diameter | .750 |
| Platform | AR15 |
| Caliber | 5.56 NATO |
| Length | 11.5" |
| Twist Rate | 1:7 |
| Gas System | Carbine |
| Material | 4150 Chrome Moly Vanadium |
| Finish | QPQ Nitride |
| Muzzle Thread | 1/2×28 |
| Made in USA | Yes |
| Weight | 24oz |
We fully comply with all federal, state, and local laws regarding the sale of restricted products. We do not market or sell to prohibited jurisdictions, and any attempts to induce illegal activity, including by law enforcement or government agencies, will be rejected and may be reported. All orders are subject to legal verification, and those in violation will be canceled. By using this site, you confirm compliance with all applicable laws.
Arm or Ally is a stocking dealer for all Aero Precision, Faxon Firearms, Ballistic Advantage, HOLOSUN, Toolcraft, Elftmann Tactical, Timney, TriggerTech, HIPERFIRE and was named the #1 Overall E-Commerce Dealer for Aero Precision Products in 2020!
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