Arm Or Ally .308 Win 20" Heavy Profile Barrel
In stock
0.00110
0.04396
128.37000
1.40487
128.37642
0.25347
Arm Or Ally .308 Win 20″ Heavy Profile Barrel
The Arm Or Ally .308 Win 20″ Heavy Profile Barrel is a premium option for shooters seeking unmatched strength, durability, and consistent performance from their large frame build. Whether you’re constructing an AR-10 platform rifle for long-range precision, hunting, or tactical applications, this barrel is built to deliver impressive results straight out of the box.
Crafted by a top-tier U.S. barrel manufacturer, each .308 Win 20″ Heavy Profile Barrel is machined from 4150 Chrome Moly Vanadium (CMV) steel—renowned for its toughness and heat resistance. Every barrel is finished in a deep black QPQ Nitride coating that provides superior corrosion resistance and surface hardness, ensuring long-term reliability and extended barrel life even under high round counts.
Each barrel is equipped with M4 feed ramps for smoother feeding and reliable cycling, while the barrel extension and barrel are finished independently before final assembly to ensure proper torque and fitment. With a rifle-length gas system and a .750 gas block journal, this configuration promotes optimal dwell time, smooth recoil impulse, and improved accuracy.
If you’re building or upgrading your .308 AR platform, the AoA 20″ Heavy Profile Barrel brings exceptional value and performance without unnecessary frills. It offers a no-nonsense design engineered for shooters who demand dependable results with every shot fired.
Barrel Features:
- Chambered in .308 Winchester – perfect for long-range shooting or heavy-duty applications
- Machined from 4150 CMV steel for strength and heat tolerance
- QPQ Nitride finish for superior corrosion resistance and longevity
- M4 feed ramps for improved reliability and smooth feeding
- Rifle-length gas system promotes softer recoil and enhanced accuracy
- .750 gas block journal for compatibility with a wide range of gas blocks
- Ideal for AR-10 builds chambered in .308 Win
- Manufactured in the USA by a leading industry partner
This barrel is an excellent choice for builders looking for premium performance at an incredible price point. Whether you’re building from scratch or upgrading your existing upper, the Arm Or Ally .308 Win 20″ Heavy Profile Barrel delivers precision, durability, and reliability you can trust.
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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 | AR10 |
| Caliber | 308 Win |
| Length | 20" |
| Twist Rate | 1:10 |
| Gas System | Rifle |
| Material | 4150 Chrome Moly Vanadium |
| Finish | QPQ Nitride |
| Muzzle Thread | 5/8×24 |
| Made in USA | Yes |
| Weight | 56oz |
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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