New HWK XL Suppressor-Ready Handguard | Check it out

Faxon Firearms AR-10 Barrel 20″ – .308 WIN – Big Gunner Profile – Rifle-Length

Be the first to review

SKU: 10A810R20NGQ  |  UPC: 816341023307

Out of Stock
Orders will Ship within 1 Business Day
Backed by the Faxon Firearms Warranty!
Only 2 remaining. Order now!
TOP ADD-ON'S
AT3™ AR 15 Gas Tube & Carbine Gas Tube Length

AT3 Stainless Gas Tube with Roll Pins - Rifle Length

$14.39
Faxon Firearms Ultra Low-Profile Gas Block - Three Set Screws

Faxon Firearms Ultra Low-Profile Gas Block - .750"

$27.59

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.

Leave your review
Rating

Customers who viewed this item also viewed these products

Faxon Firearms AR-10 18 inch Big Gunner Barrel – .308 WIN

Faxon Firearms AR-10 Barrel - 18" – .308 WIN –...

$229.08
Fully Optimized Big Gunner Barrel For .308 Win Rifles The Faxon Firearms AR-10 18
Faxon Firearms AR-10 16 inch Big Gunner Barrel – .308 WIN – Rifle-Length – 4150 QPQ

Faxon Firearms AR-10 Barrel - 16" - .308 WIN -...

$219.88
Fully Optimized Big Gunner Barrel For .308 Win Rifles The Faxon Firearms AR-10 16
Faxon Firearms 20 inch Gunner Barrel – 5.56 NATO – Rifle-Length – 4150 QPQ

Faxon Firearms Gunner AR-15 Barrel - 20" – 5.56 NATO...

(1)
$188.60
Expect Maximum Versatility, Heat Resistance, & Mitigation Of Barrel Whip The Faxon Firearms 20
Faxon Firearms AR-10 18 inch Pencil Barrel – .308 WIN – Rifle-Length – 4150 QPQ

Faxon Firearms AR-10 Barrel - 18" - .308 Win -...

$247.48
Lightweight & Extremely Accurate Barrel Option For AR-10 Platforms The Faxon Firearms AR-10 18
Faxon Firearms 18 inch Gunner Barrel – 5.56 NATO – Rifle-Length – 4150 QPQ

Faxon Firearms Gunner AR-15 Barrel - 18" – 5.56 NATO...

(2)
$179.40
Expect Maximum Versatility, Heat Resistance, & Mitigation Of Barrel Whip The Faxon Firearms 18
Faxon Firearms AR-10 16 inch Pencil Barrel – .308 WIN – Rifle-Length – 4150 QPQ

Faxon Firearms AR-10 - 16" - .308 WIN - Pencil...

$238.28
Lightweight & Extremely Accurate Barrel Option For AR-10 Platforms The Faxon Firearms AR-10 16
Faxon Firearms 16 inch Gunner Barrel - 5.56 NATO - Mid-Length - 4150 QPQ

Faxon Firearms AR-15 Barrel - 16" - 5.56 NATO -...

(4)
$170.20
Perfectly Balanced Weight and Performance – Get the Most Out of Your Barrel Today!

Faxon Firearms AR-15 Barrel -10.5"– 7.62×39 - Gunner Profile –...

$151.80
High Accuracy & Lightweight Carbine Maneuverability for 7.62×39 AR Builds This Faxon Firearms 10.5
11.5 Inch Faxon Gunner Barrel

Faxon Firearms AR-15 Barrel - 11.5" - 5.56 NATO -...

(2)
$151.80
Introducing the BIG GUNNER – Perfect for Suppressed Shooters Ideal for suppressed shooters, the
Faxon Firearms 14.5 inch Gunner Barrel - 5.56 NATO - Mid-Length - 4150 QPQ

Faxon Firearms Gunner AR-15 Barrel - 14.5" - 5.56 NATO...

(2)
$156.40
High Performing Barrel – Minus the Weight Faxon Firearms Barrels are known for its

Faxon Firearms Match Series AR-10 Barrel - 20" - 6.5...

$275.08
Versatile & Lightweight 20 Inch Barrel For 6.5 Creedmoor Rifles The Faxon Firearms Match

Faxon Firearms AR-15 Barrel - 20" - 6.5 Grendel -...

$219.99
Highly Reliable 20 Inch Gunner Barrel For 6.5 Grendel Rifles This Faxon Firearms 20

Faxon Firearms AR-15 Barrel - 16" - 7.62x39 - Gunner...

(1)
$179.40
Match-Grade Accuracy & Lightweight Carbine Maneuverability for 7.62×39 AR Builds This Faxon Firearms 16
Faxon Firearms 16 inch Gunner Barrel – 5.56 NATO – Mid-Length – Pinned Gas Block - 4150 QPQ

Faxon Firearms AR-15 Barrel – 16" – 5.56 NATO -...

$216.20
Expect Maximum Versatility, Heat Resistance, & Mitigation Of Barrel Whip The Faxon Firearms 16
Faxon Firearms 10.5 inch Pencil Barrel – 5.56 NATO – Mid-Length – 4150 QPQ

Faxon Firearms AR-15 Barrel - 10.5" - 5.56 NATO -...

(1)
$151.80
Lightest & Most Accurate Pencil Barrel In The Industry The Faxon Firearms 10.5 inch

Frequently purchased together

Breek Arms .308/AR-10 WARHAMMER Mod 2 Ambidextrous Charging Handle

(22)
$64.99
The Ultra-Light Charging Handle for Your AR-10/LR308 Pattern Rifle If you’re going to trick
Riton Optics Primal 4-16x44 Illuminated Rifle Scope with DHR Reticle

Riton Optics Primal 4-16x44 Second Focal Plane 30mm Scope -...

$379.00
Riton Optics Primal 4-16×44 Illuminated Rifle Scope with DHR Reticle Introducing the Riton Optics
Ballistic Advantage AR10 Upper Receiver

Ballistic Advantage AR-10 Upper Receiver

(1)
$194.99
Ballistic Advantage AR10 Upper Receiver The Ballistic Advantage BA10 Assembled Upper Receiver is made

B5 CAR-15 LS2 AR-15 Pistol Grip - Multiple Colors

(1)
$19.00
B5 CAR15 LS2 AR-15 Pistol Grip: Classic Aesthetics, Modern Ergonomics The B5 Systems CAR15

Aero Precision M5 Freedom Edition .308 Stripped AR-10 Lower Receiver

$219.99
American Flag Edition Aero Precision M5 Lower Doesn’t get more American than a stars-forward
LBE Unlimited .308 Delta Ring Assembly

LBE Unlimited .308 Delta Ring Assembly

(1)
$25.49
AR .308 Delta Ring Assembly Made in The USA
Phase 5 Weapon Systems FATman Hex Brake 7.62 for AR-10 - AT3 Tactical

Phase 5 Weapon Systems FATman Hex Brake - 5/8x24 -...

(1)
$120.00
The Fat Muzzle Brake For 7.62 Rifles The Phase 5 Weapon Systems FATman Hex

CMMG MK3/AR-10 Zeroed Lower Parts Kit with Ambi Safety Selector

$133.95
Color-Coded Lower Parts Kit For Easy Assembly For AR-10 The CMMG MK3/AR-10 Zeroed Lower
Maglula Magazine Loader and Unloader Gen 2 - AR-10 LR-308 Win - AT3 Tactical

Maglula Magazine Loader and Unloader Gen 2 - AR-10 LR-308...

(2)
$28.75
Save Time & Hassle With Maglula Magazine Loader/Unloader Gen 2 Since 2001, Maglula has

Ballistic Advantage Modern Series AR-15 Barrel - 12.5" - 5.56...

(1)
$138.47
Ballistic Advantage Modern Series barrels feature precision-machined 4150 CMV steel, durable Nitride coating, and

Radian Weapons Vertex 3.5 lb Single-Stage AR-15 Trigger - Flat...

(1)
$229.95
Experience The Excellent Trigger From Radian Weapons Model 1 Rifle The Radian Weapons Vertex

UTG Windowed Polymer .308 SR25/AR-10 Magazine - 25 Round

(2)
$19.97
Windowed UTG AR-10 Magazine for .308 Rifles If you’re slinging lead through your AR-10,

Armaspec AR-15 Gas Tube - Carbine, Mid-Length, and Rifle Length...

(1)
$13.49
Armaspec Gas Tube – Precise Gas Redirection Ensure reliable cycling and optimal performance with
Ultradyne USA Athena Linear Compensator - 1/2-28 or 5/8-24 Thread - AT3 Tactical

Ultradyne USA Athena Linear Compensator - Multiple Threads - Multiple...

(11)
$99.99
A Linear Compensator Above the Rest – Available for .223/5.56 or .308/7.62 ATHENA allows
Aero Precision M5 .308 Assembled Upper Receiver

Aero Precision M5 .308 Assembled Upper Receiver for AR-10

(1)
$194.99
A Sleek & Solid Assembled Upper Receiver For .308 Builds The Aero Precision M5

Questions & Answers

Don't see the answer
you're looking for?

Loading questions...