Over 300,000 customers - we say thank you!

40,000+ products for hunting and shooting sports

Experience superior accuracy with the Faxon Firearms Duty 308 Big Gunner Barrel, featuring a lightweight design, medium-taper profile, and compatibility with common gas systems.
-10 %

FAXON FIREARMS DUTY 308 WIN 20" 1-10 TWIST BIG GUNNER CONTOUR BBL NITRIDE

816341023307 430108161

Filters:

Variations
Filters:
Variations:

Variations:

-10 %
Barrel Weight: 2.24 lbs Cartridge: 308 Winchester Contour: Big Gunner Finish: Black Gas System Length: Rifle Length: 20'' Make: AR-15 Muzzle Threads: 5/8-24 Twist: 1-10 Product no.: 430108161
In stock
309.9 GBP 5 £309.90 * £344.90
-10 %
Cartridge: 308 Winchester Contour: Big Gunner Finish: Black Gas System Length: Rifle Length: 18'' Make: AR .308 Muzzle Threads: 5/8-24 Twist: 1-10 Product no.: 100026135
In stock
299.9 GBP 11 £299.90 * £334.90
-9 %
Cartridge: 308 Winchester Contour: Big Gunner Finish: Black Gas System Length: Mid-Length Length: 16'' Make: AR .308 Muzzle Threads: 5/8-24 Twist: 1-10 Product no.: 100026134
In stock
289.9 GBP 6 £289.90 * £319.90
-10 %
Barrel Weight: 1.8 lbs Cartridge: 308 Winchester Contour: Big Gunner Finish: Black Gas System Length: Mid-Length Length: 13.9'' Make: AR-15 Muzzle Threads: 5/8-24 Twist: 1-10 Product no.: 430108160
In stock
279.9 GBP 3 £279.90 * £309.90
279.9 309.9 4 GBP
-10 %
MSRP £344.90
309.9 GBP £309.90

Prices inclusive of duty & VAT.

Product no.: 430108161

Mfr. No.: 10A810R20NGQ

816341023307 The Faxon Firearms Big Gunner .308 continue their fantastic barrel-making with a bit more punch. They have updated their previous Medium-Taper profile taking into account customer feedback, optimizing the barrel to meet the Gunner brand's high standards. The .308 Big Gunner profile barrels are the big-brother to our famous 5.56 Gunner barrels. The Big Gunners feature a medium-taper behind the gas block. The gas block journal is set to .750" for compatibility with most common gas blocks and 1.9" in length for long blocks or aftermarket piston kits. From the gas block journal forward we use a thinner taper, designed to reduce weight yet maintain rigidity for high rates of fire and as a suppressor host. The Gunner barrels are ideal for any competition or duty use. When the seconds count, count on the Gunner profile. SPECS 2Barrel Material: 4150 CMV Barrel Type: Button Rifled Barrel Caliber: .308 WIN Barrel Twist: 1:10 Barrel Length: 13.9” to 20” Barrel Profile: Big Gunner Barrel Gas System: Rifle Inside Finish: Salt Bath Nitride Outside Finish: Salt Bath Nitride Muzzle Thread: 5/8x24 TPI Gas Block Diameter: .750" Gas Block Journal Length: 1.9" Barrel Extension: LR-308 (DPMS Compatible) Weight: 1.8 to 2.24 lbs depending on barrel length Magnetic Particle Inspected 11-degree Target Crown Gun Tech Note: Faxon highly recommends properly checking the head space between your barrel and bolt before firing your new barrel. For accurate measurement, Faxon recommends using PTG headspace gauges with their barrels.
In stock 5 pcs. in the USA warehouse

Delivery time approx. 7-14 days.

No charges until we ship
No charge:
Your credit card will not be charged when you place your order.

No commitments:
You are under no obligation until the goods are shipped. You can cancel your order at any time before shipping - free of charge.

Not until shipping:
Your credit card will only be charged once we ship your order. Not before.
  • Nearly match-grade accuracy potential
  • Optimized for weight and rigidity
  • Compatible with common gas blocks
279.9 309.9 4 GBP
Description Specification Customers reviews Accessories

FAXON FIREARMS DUTY 308 WIN 20" 1-10 TWIST BIG GUNNER CONTOUR BBL NITRIDE

-10 %
MSRP £344.90
309.9 GBP £309.90

Prices inclusive of duty & VAT.

Is a 'Call to order' product.

Description:

Introducing the DUTY 308 Winchester Big Gunner Profile Rifle Barrels – Precision Meets Performance!

The Faxon Firearms Big Gunner .308 continues their fantastic barrel-making with a bit more punch. They have updated their previous Medium-Taper profile taking into account customer feedback, optimizing the barrel to meet the Gunner brand's high standards.

Key Features:

  • Barrel Material: 4150 CMV
  • Barrel Type: Button Rifled
  • Barrel Caliber: .308 WIN
  • Barrel Twist: 1:10
  • Barrel Length: 13.9” to 20”
  • Barrel Profile: Big Gunner
  • Barrel Gas System: Rifle
  • Inside Finish: Salt Bath Nitride
  • Outside Finish: Salt Bath Nitride
  • Muzzle Thread: 5/8x24 TPI
  • Gas Block Diameter: .750"
  • Gas Block Journal Length: 1.9"
  • Barrel Extension: LR-308 (DPMS Compatible)
  • Weight: 1.8 to 2.24 lbs depending on barrel length
  • Magnetic Particle Inspected
  • 11-degree Target Crown

The .308 Big Gunner profile barrels are the big brother to our famous 5.56 Gunner barrels. The Big Gunners feature a medium-taper behind the gas block, with the gas block journal set to .750" for compatibility with most common gas blocks and 1.9" in length for long blocks or aftermarket piston kits. From the gas block journal forward, a thinner taper is employed, designed to reduce weight while maintaining rigidity for high rates of fire and as a suppressor host.

The Gunner barrels are ideal for any competition or duty use. When the seconds count, count on the Gunner profile.

Gun Tech Note: Faxon highly recommends properly checking the head space between your barrel and bolt before firing your new barrel. For accurate measurement, Faxon recommends using PTG headspace gauges with their barrels.



Restrictions

  • Is a 'Call to order' product.

Attributes

  • Barrel Weight:
    2.24 lbs
  • Cartridge:
    308 Winchester
  • Contour:
    Big Gunner
  • Finish:
    Black
  • Gas System Length:
    Rifle
  • Length:
    20''
  • Muzzle Threads:
    5/8-24
  • Twist:
    1-10
  • Weapon type:
    AR-15
  • Delivery weight: 1.361kg
  • Shipping height: 51mm
  • Shipping width: 51mm
  • Shipping length: 559mm
  • UPC: 816341023307

Item details

Made in USA
US export classification: 0A501.c

Customers reviews

Customer ratings (1)

5 / 5
Definitely recommended

Brownells USA Faxon 20" .308 barrel 29/03/2018

I ordered this barrel and it just arrived today. Its a perfect fit on my Aero Precision upper. I haven't shot this rifle yet but it looks perfect. I wanted a .308 AR barrel that I could mount a standard "A" front sight on and this is the barrel you need for that. Faxon makes two AR .308 pencil barrels. On the one barrel the journal where the gas block or front base goes is too short for the "A" front sight base. This is the barrel you want for mounting the "A" front sight base. The journal length needed is 1.1 inch for the "A" front sight base. The other journal length is .6 inch long and is right for a gas block. I am completely satisfied.

Variations:

-10 %
Barrel Weight: 2.24 lbs Cartridge: 308 Winchester Contour: Big Gunner Finish: Black Gas System Length: Rifle Length: 20'' Make: AR-15 Muzzle Threads: 5/8-24 Twist: 1-10 Product no.: 430108161
In stock
309.9 GBP 5 £309.90 * £344.90
-10 %
Cartridge: 308 Winchester Contour: Big Gunner Finish: Black Gas System Length: Rifle Length: 18'' Make: AR .308 Muzzle Threads: 5/8-24 Twist: 1-10 Product no.: 100026135
In stock
299.9 GBP 11 £299.90 * £334.90
-9 %
Cartridge: 308 Winchester Contour: Big Gunner Finish: Black Gas System Length: Mid-Length Length: 16'' Make: AR .308 Muzzle Threads: 5/8-24 Twist: 1-10 Product no.: 100026134
In stock
289.9 GBP 6 £289.90 * £319.90
-10 %
Barrel Weight: 1.8 lbs Cartridge: 308 Winchester Contour: Big Gunner Finish: Black Gas System Length: Mid-Length Length: 13.9'' Make: AR-15 Muzzle Threads: 5/8-24 Twist: 1-10 Product no.: 430108160
In stock
279.9 GBP 3 £279.90 * £309.90

Oops! Something went wrong.

We encountered an error while loading this content. Please refresh the page to continue. If the issue persists, contact our customer support.

Back to top