Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
You May Also Like
Best Rated Magpul Industries PMAG GEN M3 AR-10/M110/SR25 Rifle Magazine, .308 Win/7.62x51mm, NATO 20 Round, Black, 1 Pack, Polymer, MGMPI291BLK-20RD
Magpul Industries PMAG GEN M3 AR-10/M110/SR25 Rifle Magazine, .308 Win/7.62x51mm, NATO 20 Round, Black, 1 Pack, Polymer, MGMPI291BLK-20RD
(21)
List: $22.95 $21.75 Save Up to $1.20
Best Rated Magpul Industries PMAG GEN M3 AR-10/SR25 Rifle Magazine, .308 Win/7.62x51mm NATO, 25 Round, Black, 1 Pack, Polymer, MGMPI292BLK-25RD
Magpul Industries PMAG GEN M3 AR-10/SR25 Rifle Magazine, .308 Win/7.62x51mm NATO, 25 Round, Black, 1 Pack, Polymer, MGMPI292BLK-25RD
(17)
List: $24.95 $22.45 Save Up to 10%
Blazin' Deal TRYBE Defense TRYBE Defense Self-Timing Muzzle Brake, .30 Cal./7.62, 5/8x24, Black, STMZBK30
TRYBE Defense TRYBE Defense Self-Timing Muzzle Brake, .30 Cal./7.62, 5/8x24, Black, STMZBK30
List: $99.99 $63.70 Save Up to 36%
Amend2 Kinetic Development Group Mod-3 Magazine, KA2-20 SCAR 17/17S/20/20S, 7.62x51mm NATO/.308 Winchester, 20 Round, Black, SCARMOD3BLK20-20RD
Amend2 Kinetic Development Group Mod-3 Magazine, KA2-20 SCAR 17/17S/20/20S, 7.62x51mm NATO/.308 Winchester, 20 Round, Black, SCARMOD3BLK20-20RD
(2)
List: $32.99 $30.89 Save Up to $2.10
Best Rated Amend2 Mod-3 Magazine, Short-Action AICS, 7.62x51mm NATO/.308 Winchester, 12 Round, Black, 1 Pack, Polymer, SAAICSBLK12-12RD
Amend2 Mod-3 Magazine, Short-Action AICS, 7.62x51mm NATO/.308 Winchester, 12 Round, Black, 1 Pack, Polymer, SAAICSBLK12-12RD
(6)
List: $32.99 $29.99 Save Up to $3.00
Best Rated PMC Ammunition Bronze .308 Winchester 147 Grain Full Metal Jacket Brass Rifle Ammunition, 20 Rounds, 308B
PMC Ammunition Bronze .308 Winchester 147 Grain Full Metal Jacket Brass Rifle Ammunition, 20 Rounds, 308B
(30)
List: $28.00 $23.99 Save Up to 14%
Best Rated TRYBE Defense Threaded Barrel, AR-15, .300 Blackout, 10.5 inch, Government Profile, Pistol Length, 1-7 Twist, 5/8x24 Thread, Nitride Finish, Black, BARPIST105300
TRYBE Defense Threaded Barrel, AR-15, .300 Blackout, 10.5 inch, Government Profile, Pistol Length, 1-7 Twist, 5/8x24 Thread, Nitride Finish, Black, BARPIST105300
(11)
List: $174.99 $109.99 Save Up to 37%
Blazin' Deal TRYBE Defense Milspec Complete AR10 .308 Bolt Carrier Group BCG, Nickel Boron, BCG308-NB
TRYBE Defense Milspec Complete AR10 .308 Bolt Carrier Group BCG, Nickel Boron, BCG308-NB
(74)
List: $214.99 $153.08 Save Up to 29%
Blazin' Deal TRYBE Defense 5.56 NATO Medium Profile AR Rifle Barrel, Black, 16in, BARRIF16556
TRYBE Defense 5.56 NATO Medium Profile AR Rifle Barrel, Black, 16in, BARRIF16556
(9)
List: $174.99 $94.28 Save Up to 46%
Questions & Answers
Will this work with Diamondback (DBAR10)? Manufacturer Answer

Yes, this barrel will work in the DBAR10

by Faxon Firearms, Manufacturer, January 14, 2026
Customer Reviews
Helpful Positive Review
great for a north east woods gun by Gator, Verified Owner, November 4, 2023
Perfect barrel length with a flash hider for a decent large frame AR to bring our in the woods. Should pair well with an SLR 13in .308H handguard. If you aren’t using a pistol brace or sbr lower you’ll need to pin and weld, which is fine.
1/1 found this helpful
Helpful Negative Review
Defective barrel by D, Verified Owner, December 26, 2023
Hopefully a one-off, but the barrel Received passes headspace but fails chamber gauge. I think during QA/QC in manufacturing it seems they forgot to check chambering. Unfortunately, I didn't find this out until I had my AR-10 full assembled and at ...
Read More...
2/2 found this helpful
Most Recent Reviews
My Alaskan fishing rifle by Raven 26, Verified Owner, May 27, 2025
I just got my AR10 rifle built and test fired, I made the right choice in acquiring this 13.9 inch .308 barrel and match it with my Aero Percision platform…this AR10 .308 rifle is my bear defense weapon when fishing in Alaska (along with my 10mm fo...
Read More...
Most Recent Reviews
No complaints by Ryno, Verified Owner, March 29, 2025
Good barrel. Have had good luck with most faxon products.
Most Recent Reviews
13.9” Gunner 308 barrel by Les, Verified Owner, April 4, 2024
Great barrel, well finished, had to polish the feed ramps but no big deal. Excellent machine work.
Read All 5 Reviews

13% OFF AR Parts + 2% Bucks

ARPARTYClick to Copy Coupon Code
Eligible models will have a savings offer and the coupon code to use below. Add the item to your cart and enter coupon code for savings on that select model! Expires in 13 hours. Cannot be combined with other promotions or offers.
Color:
Black
Finish:
Nitride
Caliber:
.308 Winchester
Barrel Length:
13.9 in
Barrel Profile:
Gunner
Gas System Length:
Mid Length
Gas Block Journal Size-Diameter:
.750 in
Barrel Twist Rate:
1-10
Gun Make:
AR Platform
Gun Model:
AR-10
Weight:
2.13 lb
Firearms Threads Per Inch:
5/8x24

Code: 11I-ATB-FFDB-10A810M139NGQ

MPN: 10A810M139NGQ

UPC: 816341026988

List: $232.00Save $18.00
$214.00

Product Info for Faxon Firearms Duty .308 WIN Barrel

Faxon's .308 continue our fantastic barrel-making with a bit more punch. We've updated our previous Medium-Taper profile taking into account customer feedback, optimizing the barrel to meet the Gunner brand's high standards.image

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.

WARNING: California`s Proposition 65

Specifications for Faxon Firearms Duty .308 WIN Barrel:

Manufacturer: Faxon Firearms
Color: Black
Finish: Nitride
Fabric/Material: 4150 CMV Steel
Caliber: .308 Winchester
Barrel Length: 13.9 in
Barrel Profile: Gunner
Gas System Length: Mid Length
Gas Block Journal Size-Diameter: .750 in
Barrel Twist Rate: 1-10
Gun Make: AR Platform
Gun Model: AR-10
Weight: 2.13 lb
Firearms Threads Per Inch: 5/8x24

Package Contents:

  • Faxon Firearms Duty .308 WIN Barrel

Faxon Firearms Duty .308 WIN Barrel Orderable Models

List of Orderable Models

  • Faxon Firearms Duty Barrel, AR Platform, AR-10, .308 WIN, 13.9in, Big Gunner, Mid Length, 1-10 Twist, 5/8-24 Thread, Black, 10A810M139NGQ , MPN: 10A810M139NGQ , UPC: 816341026988 , Code: 11I-ATB-FFDB-10A810M139NGQ
Compare (0)