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Faxon Firearms Big Gunner Style Barrels Up to 16% Off and Blazin' Deal w/ Free Shipping — 2 models

Faxon Firearms 8in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P8NGQ
Faxon Firearms 12in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P12NGQ
Faxon Firearms 8in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P8NGQ
Faxon Firearms 8in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P8NGQ
Faxon Firearms 12in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P12NGQ
Faxon Firearms 12in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P12NGQ
Faxon Firearms 12in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P12NGQ
Faxon Firearms 8in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P8NGQ
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Faxon Firearms 8in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P8NGQ
Faxon Firearms 12in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P12NGQ
2 of 7 images
Faxon Firearms 12in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P12NGQ
Faxon Firearms 8in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P8NGQ
3 of 7 images
Faxon Firearms 8in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P8NGQ
Faxon Firearms 8in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P8NGQ
4 of 7 images
Faxon Firearms 8in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P8NGQ
Faxon Firearms 12in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P12NGQ
5 of 7 images
Faxon Firearms 12in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P12NGQ
Faxon Firearms 12in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P12NGQ
6 of 7 images
Faxon Firearms 12in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P12NGQ
Faxon Firearms 12in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P12NGQ
7 of 7 images
Faxon Firearms 12in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P12NGQ

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Questions & Answers
What’s the minimum handguard ID that will work for this barrel? Manufacturer Answer

The minimum diameter for the inside of your handguard will be more dependent on the gas block you choose than the barrel since the gas block will be the largest diameter item that the handguard has to cover. For instance, when paired with our .875" diameter gas block you would need a handguard with an inner diameter of at least 1.100" as well as a channel along the top for the gas tube and it's housing on the gas block. Larger gas blocks may require a larger inside diameter. Fortunately, due to the nature of the DPMS Gen 1/LR-308 design, most compatible handguards will have an ID greater then 1.1" so you should not have issue fitting one over this barrel.

by Faxon Firearms, Manufacturer, January 30, 2023
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Customer Reviews
Most Recent Reviews
Shoots an 8” group at 100 yards by John, Verified Owner, November 27, 2024
I have used $2.50/rnd Gorilla Ammunition as well as custom loads. The muzzle device is not the issue. I have an adjustable gas block. The barrel shoots about an 8” group. I wouldn’t recommend it. Although I have heard Faxon made good things in the pa...
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0/1 found this helpful
Most Recent Reviews
8.6 Blackout Perfection by ReeceDOA, Verified Owner, October 6, 2025
Faxon really hit a home run with the 16-inch Big Gunner in 8.6 Blackout. The mid-length gas system on this profile manages the massive energy of the 8.6 cartridge beautifully. It has just the right combination of rigidity and lighter weight—it doesn'...
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Most Recent Reviews
12" 8.6 blkout by J.B., Verified Owner, December 28, 2023
Part of a build thats in process. Can not honestly review performance at this time. However faxon is a leader in barrel performance and a lot of other companies rely on their knowledge. I fully trust that this barrel will perform as it should. I trus...
Read More...
Read All 3 Reviews

Let's Start Celebrating Already! Save up to 20% on Faxon Firearms Products

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Blazin' Deal
Prices have been cut drastically on this product as part of a special offer. These prices are so low that there's no double-dipping with coupons or any additional discounts, but you'll still get the best deal out there. This offer won't last long, so don't miss out!
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Product Info for Faxon Firearms Big Gunner Style Barrels

Welcome to the future. Faxon Firearms is proud to partner with Q on the development of barrels for their revolutionary new round, 8.6 Blackout (8.6 BLK).image

With barrels employing an impressive 1:3 twist rate, 8.6 BLK channels rotational energy to increase energy on-target. As with all Faxon Barrels, these 8.6 BLK barrels are machined from raw bar stock in our greater Cincinnati Facility. Faxon 8.6 BLK barrels are fully stress-relieved, air-gauge tested, Magnetic Particle Inspected, and 11-degree target crowned to ensure superior accuracy. Constructed of 4150 CMV, each barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. All Faxon Barrels are individually checked for headspace by precision custom hardened gauges and are backed by the Faxon Lifetime Guarantee.

WARNING: California`s Proposition 65

Specifications for Faxon Firearms Big Gunner Style Barrels:

Manufacturer: Faxon Firearms
Color: Black
Finish: Nitride
Fabric/Material: 4150 CMV
Caliber: 8.6mm Blackout
Barrel Profile: Big Gunner
Gas System Length: Pistol Length
Gas Block Journal Size-Diameter: .875 in
Flutes: Straight
Gun Make: DPMS
Condition: New
Firearms Threads Per Inch: M18x1.5

Package Contents:

  • Faxon Firearms Big Gunner Style Barrels
  • Thread Protector Taper Adapeter

Faxon Firearms Big Gunner Style Barrels Orderable Models

List of Orderable Models

  • Faxon Firearms 8in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P8NGQ , MPN: 10A863P8NGQ , UPC: 816341026360 , Code: 11I-ATB-RM2-10A863P8NGQ
  • Faxon Firearms 12in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P12NGQ , MPN: 10A863P12NGQ , UPC: 816341026377 , Code: 11I-ATB-RM2-10A863P12NGQ

Faxon Firearms Big Gunner Style Barrels Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Faxon Firearms 8in Big Gunner Barrel, 8.6 BLK, Pistol Length, 4150, Nitride, 1-3 Twist Rate, Black, 10A863P8NGQ , MPN: 10A863P8NGQ-DEMO , Code: 11I-ATB-RM2-10A863P8NGQ-DEMO
  • Faxon Firearms 16in Big Gunner Barrel, 8.6 BLK, Carbine Length, 4150, Nitride, Black, 10A863C16NGQ , MPN: 10A863C16NGQ , UPC: 816341026384 , Code: 11I-ATB-RM2-10A863C16NGQ
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