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Faxon Firearms 5.56 NATO Gunner Rifle Barrel Up to $15.00 Off — Free 2 Day Shipping w/ code 2DAYAIR — 5 models

Special offer available for this product. Click here to see!
Faxon Firearms 11.5in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small 15A58M14NGQ
Faxon Firearms 16in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 11.5in BIG GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ, 15A58M11NGQ
Faxon Firearms 11.5in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
Faxon Firearms 11.5in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
Faxon Firearms 11.5in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small 15A58M14NGQ
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small 15A58M14NGQ
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small 15A58M14NGQ
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small, 15A58M14NGQ
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small 15A58M14NGQ
Faxon Firearms 16in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
Faxon Firearms 16in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
Faxon Firearms 16in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ, 15A58M16NGQ
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ, 15A58R18NGQ
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ, 15A58R20NGQ
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 11.5in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
1 of 27 images
Faxon Firearms 11.5in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small 15A58M14NGQ
2 of 27 images
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small 15A58M14NGQ
Faxon Firearms 16in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
3 of 27 images
Faxon Firearms 16in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
4 of 27 images
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
5 of 27 images
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 11.5in BIG GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ, 15A58M11NGQ
6 of 27 images
Faxon Firearms 11.5in BIG GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ, 15A58M11NGQ
Faxon Firearms 11.5in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
7 of 27 images
Faxon Firearms 11.5in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
Faxon Firearms 11.5in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
8 of 27 images
Faxon Firearms 11.5in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
Faxon Firearms 11.5in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
9 of 27 images
Faxon Firearms 11.5in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small 15A58M14NGQ
10 of 27 images
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small 15A58M14NGQ
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small 15A58M14NGQ
11 of 27 images
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small 15A58M14NGQ
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small 15A58M14NGQ
12 of 27 images
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small 15A58M14NGQ
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small, 15A58M14NGQ
13 of 27 images
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small, 15A58M14NGQ
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small 15A58M14NGQ
14 of 27 images
Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small 15A58M14NGQ
Faxon Firearms 16in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
15 of 27 images
Faxon Firearms 16in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
Faxon Firearms 16in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
16 of 27 images
Faxon Firearms 16in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ
Faxon Firearms 16in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ, 15A58M16NGQ
17 of 27 images
Faxon Firearms 16in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ, 15A58M16NGQ
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ, 15A58R18NGQ
18 of 27 images
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ, 15A58R18NGQ
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
19 of 27 images
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
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Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
21 of 27 images
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
22 of 27 images
Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
23 of 27 images
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
24 of 27 images
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ, 15A58R20NGQ
25 of 27 images
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ, 15A58R20NGQ
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
26 of 27 images
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ
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Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ

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Questions & Answers
Will the Faxon .625 gas block with 3 set screws work on this barrel with it not being dimpled? Expert Answer

That gas block will work on this barrel, however you would have to dimple the barrel first for proper security.

by Ethan C., Gear Expert, February 15, 2019
See 1 More Answer
What's the rifling twist rate? It just says "1". Expert Answer

All of the current Gunner profile barrels listed (11.5", 14.5", 16", 18" and 20") are all a 1:8 twist.

by Armando R., Gear Expert, May 22, 2019
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Good barrel. by Khandabomb, Verified Owner, April 26, 2024
works pretty good with my aero upper. Very lightweight.
1/1 found this helpful
Helpful Positive Review
16” Great! But… by Mike, Verified Owner, December 29, 2022
I purchased the 16” barrel about a year ago to build a lightweight weapon that could be carried long distances if needed, while also being balanced with the weight not toward the front of the gun. I finished assembly, used a BCM MCMR10 handguard, and...
Read More...
7/8 found this helpful
Helpful Positive Review
Beautifully machined. by Sheldon C, Verified Owner, February 24, 2025
I'm still in the process of the build but having inspected this barrel with a borescope I'm impressed with the machining. The rifling is cut clean and uniformly, the barrel lugs are crisp and clean and the muzzle crown is cut to perfection. I'm very ...
Read More...
1/1 found this helpful
Helpful Positive Review
A unique barrel, but works great with the right gas setup by Danny, Verified Owner, May 29, 2025
This is a pretty wild barrel with the short overall length and long gas system. I paired mine with an Aero Precision adjustable gas block, and with about 5 minutes tuning on the range found a reliable gas setting for shooting unsuppressed. My AR pist...
Read More...
1/1 found this helpful
Helpful Positive Review
I really like these barrels. by Moondoctor, Verified Owner, February 27, 2025
I have 7 of these barrels installed on different style AR15's and I really like the look of these barrels.
1/1 found this helpful
Helpful Positive Review
Major upgrade by J Squeazy, February 28, 2018
Changed my stock barrel for the Faxon and love it so far. About 1000 rounds through and much more consistent than the factory barrel. Been putting holes in paper and dropping panties all day long at the range with this sweet piece. Get on it.
28/32 found this helpful
Read All 68 Reviews

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Product Info for Faxon Firearms 5.56 NATO Gunner Rifle Barrel

Faxon Firearms 5.56 Button Rifled Gunner Barrels are absolutely tops in performance, weight, balance, and value. These AR15 Barrels by Faxon Firearms are pure government styling from the extension to the gas block, including the .625in gas block journal. The Faxon Firearms 5.56 4150 Stainless Steel Gunner Barrel is fully stress relieved, air-gauge tested, and has an 11-degree target crown for superior accuracy. For a barrel that performs and looks great, choose the Faxon Firearms 5.56 M4 Gunner Rifle Barrel.image

WARNING: California`s Proposition 65

Specifications for Faxon Firearms 5.56 NATO Gunner Rifle Barrel:

Manufacturer: Faxon Firearms
Color: Black Nitride
Finish: Nitride
Fabric/Material: 4150 Steel
Caliber: 5.56x45mm NATO
Barrel Profile: Gunner
Gas Block Journal Size-Diameter: .625 in
Barrel Twist Rate: 1-8
Barrel Material: 4150 Chrome Moly Vanadium
Flutes: No
Gun Make: AR Platform
Gun Model: AR-15
Condition: New
Gas Block Journal Size-Length: 1.9 in
Gun Type: Rifle
Firearms Threads Per Inch: 1/2x28

Features of Faxon Firearms 5.56 NATO Gunner Rifle Barrel:

  • Barrel Material: 4150 CMV
  • Barrel Type: Button Rifled
  • Barrel Caliber: 5.56
  • Barrel Twist: 1:8
  • Barrel Profile: Gunner
  • Inside Finish: Nitride
  • Outside Finish: Nitride
  • Muzzle Thread: 1/2-28
  • Barrel Extension: M4
  • Magnetic Particle Inspected
  • 11-degree Target Crown

Package Contents:

  • Faxon Firearms 5.56 NATO Gunner Rifle Barrel

What firearm models does the manufacturer say Faxon Firearms 5.56 NATO Gunner Rifle Barrel is compatible with?

The manufacturer suggests that Faxon Firearms 5.56 NATO Gunner Rifle Barrel is compatible with AR-15

Faxon Firearms 5.56 NATO Gunner Rifle Barrel Orderable Models

List of Orderable Models

  • Faxon Firearms 11.5in BIG GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ, 15A58M11NGQ , MPN: 15A58M11NGQ , UPC: 816341020016 , Code: 11I-ATB-FF556GRB-15A58M11NGQ
  • Faxon Firearms 14.5in Gunner, 5.56 Nato, Mid-Length Rifle Barrel, 4150 QPQ, Black, Small, 15A58M14NGQ , MPN: 15A58M14NGQ , UPC: 816341020047 , Code: 11I-ATB-FF556GRB-15A58M14NGQ
  • Faxon Firearms 16in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ, 15A58M16NGQ , MPN: 15A58M16NGQ , UPC: 816341020153 , Code: 11I-ATB-FF556GRB-15A58M16NGQ
  • Faxon Firearms 18in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ, 15A58R18NGQ , MPN: 15A58R18NGQ , UPC: 816341020184 , Code: 11I-ATB-FF556GRB-15A58R18NGQ
  • Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ, 15A58R20NGQ , MPN: 15A58R20NGQ , UPC: 816341020214 , Code: 11I-ATB-FF556GRB-15A58R20NGQ

Faxon Firearms 5.56 NATO Gunner Rifle Barrel Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Faxon Firearms 11.5in BIG GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ, 15A58M11NGQ , MPN: 15A58M11NGQ-DEMO , Code: 11I-ATB-FF556GRB-15A58M11NGQ-DEMO-OB-A
  • USED, Faxon Firearms 16in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ, 15A58M16NGQ , MPN: 15A58M16NGQ-EDEMO , Code: 11I-ATB-FF556GRB-15A58M16NGQ-EDEMO-SC-C
  • DEMO, Faxon Firearms 11.5in GUNNER, 5.56 NATO, Mid-Length, 4150 QPQ 15A58M11NGQ , MPN: 15A58M11NGQ-DEMO , Code: 11I-ATB-FF556GRB-15A58M11NGQ-DEMO
  • USED, Faxon Firearms 20in GUNNER, 5.56 NATO, Rifle-Length, 4150 QPQ, 15A58R20NGQ , MPN: 15A58R20NGQ-EDEMO , Code: 11I-ATB-FF556GRB-15A58R20NGQ-EDEMO-IN-C
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Last updated 2026-07-18 UTC.