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Questions & Answers
Is this exactly 9 inches? I have a 9 inch handguard and would like it to be flush with that? Expert Answer

According to Faxon it is exactly 9" long.

by Ethan C., Gear Expert, October 1, 2019
What is the twist rate for the 9 inch barrel? Expert Answer

The 9" Match Series Gunner barrel is a 1:8 barrel twist.

by Armando R., Gear Expert, May 15, 2019
Customer Reviews
Helpful Positive Review
Ok if you don't know anything about .300 blackout maybe you shouldn't even be building one until you do some research . . First off , the gas port most likely isn't too small. You will rarely find a 300 bo that will reliable cycle subsonic ammunition...
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31/34 found this helpful
Helpful Positive Review
Top quality by Moody27, Verified Owner, March 9, 2025
Faxon makes too quality barrels. 5r rifling and some of the top notch performance that you can expect out of a match grade barrel. High recommended
1/1 found this helpful
Helpful Positive Review
Faxon 300 Blackout by Gun-nut, March 13, 2019
Very well made, expels heat.very well was very impressed, faxon hit it out of park with this one. Plan on doing another build very soon will be ordering another one, look forward to doing business with OpticsPlanet again thanks..
1/1 found this helpful
Helpful Positive Review
16" Gunner is AMAZING! by Jeff, Verified Owner, April 20, 2019
I built my first 300AAC with the 16" Faxon gunner profile barrel. It did extremely well with 110V-Max. I consistently had 5 shot groups at 100 yards smaller than a quarter. It was still sub MOA on 3 shot groups with 150gr hunting SPBT rounds. I'm onl...
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3/3 found this helpful
Helpful Positive Review
Excellent Quality by bafflingbs, Verified Owner, September 6, 2023
This is my first, but not last, experience with Faxon and nitrated 416r steel. I have to say, that I am extremely impressed, with Faxon’s workmanship. I tried to dimple the barrel, for my gas block, and didn’t even scratch the darn thing! Granted, my...
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1/1 found this helpful
Helpful Positive Review
My 1st Faxon bbl by Sergei Brown, Verified Owner, February 20, 2020
I've brought this barrel for my 2nd build (.300 blackout pistol). I'am still in the process of building this pistol. There isn't many companies selling this barrel in the 9" length. I love the nickel plated extension only somewhat con is I had to the...
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2/3 found this helpful
Read All 50 Reviews

Final Stretch of 2025 Begins Now! Special Pricing for Faxon Firearms Products

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 300 Gunner Rifle Barrel

This Faxon Firearms 300 Gunner Rifle Barrel is a hybrid build combining the ruggedness of the government profile with the light weight of the pencil profile to create a perfectly-balanced barrel for your weapon. Faxon Firearms crafted these AR15 Barrels from steel and added a QPQ nitride finish inside and out for enhanced resistance against corrosion and abrasion. These barrels bring the balance of your gun back towards your body, resulting in a more comfortable shooting experience for all-day adventures. The Faxon Firearms .300 AAC Blackout Gunner Rifle Barrel is also button-rifled for increased accuracy and guaranteed consistency of bore and groove dimensions. Improve your aim and create a longer-lasting weapon by installing this Faxon Firearms 300 BLK Gunner Profile Rifle Barrel.image

WARNING: California`s Proposition 65

Specifications for Faxon Firearms 300 Gunner Rifle Barrel:

Manufacturer: Faxon Firearms
Color: Black Nitride
Caliber: .300 AAC Blackout
Barrel Profile: Gunner
Gas Block Journal Size-Diameter: .750 in
Threads per Inch: 5/8x24
Barrel Twist Rate: 1-8
Flutes: No
Gun Make: AR Platform
Gun Model: AR-15
Condition: New
Gas Block Journal Size-Length: 1.9 in
Gun Type: Rifle

Features of Faxon Firearms 300 Gunner Rifle Barrel:

  • Button rifled
  • M4 barrel extension
  • .300 Blackout for more power - compatible with AR15 components
  • Gunner Profile - hybrid of Government profile in rear and Pencil profile in front. Retains weight at the rear to maximize heat resistance and mitigate whip, and removes weight from front of barrel for maximum versatility
  • QPQ Nitride finish for durability and corrosion resistance
  • Gas Block Journal Length 1.9 inches
  • Individually checked for headspace by precision custom hardened gauges
  • Magnetic Particle Inspected
  • 11-degree Target Crown

Package Contents:

  • Faxon Firearms 300 Gunner Rifle Barrel

Faxon Firearms 300 Gunner Rifle Barrel Orderable Models

List of Orderable Models

  • Faxon Firearms 300 Gunner Rifle Barrel, Pistol-Length, 4150 QPQ Nitride, Black Nitride, 7.5, 15A38P7NGQ , MPN: 15A38P7NGQ , UPC: 816341023208 , Code: 11I-ATB-300BLK-15A38P7NGQ
  • Faxon Firearms 300 Gunner Rifle Barrel, Pistol-Length, 4150 QPQ Nitride, Black Nitride, 10.5, 15A38P10NGQ , MPN: 15A38P10NGQ , UPC: 816341023215 , Code: 11I-ATB-300BLK-15A38P10NGQ
  • Faxon Firearms 300 Gunner Rifle Barrel, Carbine-Length, 4150 QPQ Nitride, Black Nitride, 16, 15A38C16NGQ , MPN: 15A38C16NGQ , UPC: 816341023222 , Code: 11I-ATB-300BLK-15A38C16NGQ
  • Faxon Firearms 300 Gunner Rifle Barrel, Pistol-Length, 416-R Stainless QPQ Nitride, 5R, NP3 Extension, Black Nitride, 10.5, 15B38P10NGQ-5R-NP3 , MPN: 15B38P10NGQ-5R-NP3 , UPC: 816341023246 , Code: 11I-ATB-300BLK-15B38P10NGQ-5R-NP3
  • Faxon Firearms 300 Gunner Rifle Barrel, Pistol-Length, 416-R Stainless QPQ Nitride, 5R, NP3 Extension, Black Nitride, 9, 15B38P9NGQ-5R-NP3 , MPN: 15B38P9NGQ-5R-NP3 , UPC: 816341023239 , Code: 11I-ATB-300BLK-15B38P9NGQ-5R-NP3

Faxon Firearms 300 Gunner Rifle Barrel Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Faxon Firearms 300 Gunner Rifle Barrel, Pistol-Length, 4150 QPQ Nitride, Black Nitride, 7.5, 15A38P7NGQ , MPN: 15A38P7NGQ-EDEMO , Code: 11I-ATB-300BLK-15A38P7NGQ-EDEMO-IN-C
  • DEMO, Faxon Firearms 300 Gunner Rifle Barrel, Carbine-Length, 4150 QPQ Nitride, Black Nitride, 16, 15A38C16NGQ , MPN: 15A38C16NGQ-DEMO , Code: 11I-ATB-300BLK-15A38C16NGQ-DEMO
  • DEMO, Faxon Firearms 300 Gunner Rifle Barrel, Pistol-Length, 416-R Stainless QPQ Nitride, 5R, NP3 Extension, Black Nitride, 9, 15B38P9NGQ-5R-NP3 , MPN: 15B38P9NGQ-5R-NP3-DEMO , Code: 11I-ATB-300BLK-15B38P9NGQ-5R-NP3-DEMO
  • Faxon Firearms 300 Gunner Rifle Barrel, Carbine-Length, 416-R Stainless, QPQ Nitride, 5R, NP3 Extension, Black Nitride, 16, 15B38C16NGQ-5R-NP3 , MPN: 15B38C16NGQ-5R-NP3 , UPC: 816341023376 , Code: 11I-ATB-300BLK-15B38C16NGQ-5R-NP3
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