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Faxon Firearms AR-10 20 inch Big Gunner Barrel – .308 WIN – Rifle-Length – 4150 QPQ

SKU: 10A810R20NGQ

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Fully Optimized Big Gunner Barrel For .308 Win Rifles

The Faxon Firearms AR-10 20 inch Big Gunner Barrel – .308 WIN is the bigger version of the Faxon’s unique 5.56 Gunner barrels that feature a medium-taper profile behind the gas block – fully optimized to meet the Gunner brand’s high standards.

These AR-10 barrels offer a gas block journal that is set to .750″ for compatibility with most common gas blocks and 1.9″ in length for long blocks or aftermarket piston kits. It also uses a thinner taper from the gas block journal forward that is designed to reduce weight yet maintain rigidity for high rates of fire and as a suppressor host.

The Faxon Big Gunner barrels offer superior accuracy with less weight which is ideal for any competition or duty use.

4150 CMV Stainless Steel With A QPQ Nitride Finish

The Faxon Firearms AR-10 20 inch Big Gunner Barrel – .308 WIN is built from tough 4150 CMV stainless steel with a QPQ nitride finish inside and out for enhanced resistance to corrosion and wear for an extended lifetime of use. It is fully stress-relieved, air-gauge tested and 11-degree target crowned to ensure durability and superior accuracy.

Features:

  • Lightweight: The no.1 choice of major brands in terms of balanced weight and performance. Expect superior accuracy minus the weight!
  • Accurate: Fully stress relieved, air-gauge tested and 11-degree target crowned to ensure exceptional accuracy.
  • Tough Finish: Built from 4150 CMV Steel with QPQ Nitride Finish from the inside and out, this barrel is as strong and tough compared to other expensive brands.

Specifications:

  • Barrel Material: 4150 CMV
  • Barrel Type: Button Rifled
  • Barrel Caliber: .308 WIN
  • Barrel Twist: 1:10
  • Barrel Length: 20”
  • Barrel Profile: Big Gunner
  • Barrel Gas System: Rifle
  • Inside Finish: Salt Bath Nitride
  • Outside Finish: Salt Bath Nitride
  • Muzzle Thread: 5/8-24 TPI
  • Gas Block Diameter: .750″
  • Gas Block Journal Length: 1.9″
  • Barrel Extension: LR-308 (DPMS Compatible)
  • Weight: 2.24 lbs
  • Magnetic Particle Inspected
  • 11-degree Target Crown

Specifications:

Caliber.308 Winchester/7.62x51 NATO
Barrel Length20 inches
Barrel Twist Rate1:10 inches
Barrel Material4150 CMV
Muzzle Threads5/8/2024
Barrel FinishBlack Nitride
Gas Block Size.750″ Gas Block
FitAR-10
Barrel ProfileBig Gunner
Barrel Gas SystemRifle
Gas Block Journal Length1.9 inches
Barrel ExtensionM4
Weight35.84 ounces

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Faxon Firearms Warranty

We do understand that life happens and that often a purchase will need to be returned. Customers may return any product, for any reason, in line with the requirements & policies below.

For any errors on Faxon’s part, after notification from the customer, Faxon will dispatch a Fed-Ex Ground label for the return of the product. Upon receipt and inspection at Faxon, a replacement will be sent to the customer via Fed-Ex Ground with tracking information sent to the customer.

REQUIREMENTS

  • Faxon will only refund products purchased directly through Faxon Firearms.
  • If you purchased a product through one of Faxon’s authorized dealers and would like to return the product for a refund, you must contact the dealer for your refund.
  • Merchandise must be in new condition with original packaging
  • Merchandise must be return-shipped in a protective box
  • A full refund including shipping if the return resulted from our error, otherwise we will deduct the shipping costs from the refund.
  • All product replacements done under warranty can be handled by Faxon directly.
  • The customer will receive a refund within 10 business days of our receiving your return. The refund issued in the same form of payment used for purchase.
  • No return will be granted for a product that is modified in any way
  • No returns for refund after 30 days from the delivery date of the product.
  • There will be a 15% restocking fee on all returns.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.

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