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Faxon Firearms AR-15 5.56 NATO 14.5" GUNNER Mid-Length 4150 QPQ PINNED BRAKE - 16"
Faxon Firearms AR-15 5.56 NATO 14.5" GUNNER Mid-Length 4150 QPQ PINNED BRAKE - 16"
Faxon Firearms AR-15 5.56 NATO 14.5" GUNNER Mid-Length 4150 QPQ PINNED BRAKE - 16"
Faxon Firearms AR-15 5.56 NATO 14.5" GUNNER Mid-Length 4150 QPQ PINNED BRAKE - 16"
Faxon Firearms AR-15 5.56 NATO 14.5" GUNNER Mid-Length 4150 QPQ PINNED BRAKE - 16"
Faxon Firearms AR-15 5.56 NATO 14.5" GUNNER Mid-Length 4150 QPQ PINNED BRAKE - 16"
Faxon Firearms AR-15 5.56 NATO 14.5" GUNNER Mid-Length 4150 QPQ PINNED BRAKE - 16"

Faxon Firearms AR-15 5.56 NATO 14.5" GUNNER Mid-Length 4150 QPQ PINNED BRAKE - 16"

Faxon Firearms · Barrels

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$236.55at Rainier Arms

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StorePriceAvailabilityBuyAdd to build
Rainier Arms Best price $236.55not checked recently Check store Buy at Rainier Arms
Faxon Firearms $249.00checked Oct 1, 2026 Check store Buy at Faxon Firearms

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

Dashed line = out of stock. Tracking since Sep 28, 2026.

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Since Sep 28, 2026.

About this part

The Faxon Firearms AR-15 5.56 NATO 14.5" GUNNER Mid-Length 4150 QPQ PINNED BRAKE - 16" is a 14.5" 5.56 / .223 barrel from Faxon Firearms with a mid-length gas system. It's sold by 2 stores, from $236.55 to $249.00.

Fits and works with

Caliber
5.56 / .223 · Shop matching ammo
Bolt
Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Gas system
Mid-length · Handguards
Barrel length
14.5" · Handguards

Specifications

Manufacturer
Faxon Firearms
Platform
AR-15
Caliber
5.56 mm NATO
Gas system
Mid
Barrel length
16"

From the manufacturer


The GUNNER (all caps, as it is that awesome) is the pinnacle of performance, weight, balance, and value. Designed by our competition shooting staff for those who value performance and versatility, the GUNNER profile is a blend of two of the best performing profiles of all time, Gov't and Pencil.  Proving that every once and awhile, the Government can do something right, the GUNNER's profile from the extension to the gas block mimics that delicious taper. From there, common sense takes over and the GUNNER moves to a .625" gas block journal and our famed pencil profile out front. Removing the weight from the front of the barrel ensures maximum versatility and keeps material to the rear to maximize heat resistance and mitigate whip. The GUNNER is for real gunners.   Faxon Firearms barrels are the pinnacle of value. Manufactured 100% in-house from cradle-to-grave, these barrels are fully stress releived, air-gauge tested, and 11 degree target crowned to ensure superior accuracy.  Quality is imbuned into our barrels from the start. We start with the best materials, either certified 4150 Mil-Spec steel or 416-R Stainless. From there, each barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. All barrels are individually checked for headspace by precision custom hardened gauges.  Faxon manufactures all our barrels in Cincinnati, Ohio under our ISO:9001 and AS:9100  quality certifications.  Barrel Material: 4150 CMV SteelBarrel Type: Button Rifled Barrel Caliber: 5.56Barrel Twist: 1:8Barrel Length: 14.5”-Pinned and welded 3 port muzzle breake-16" overallBarrel Profile:  GUNNER Barrel Gas System: MidInside Finish: QPQ NitrideOutside Finish: QPQ Nitride Gas Block Diameter: .625"Gas Block Journal Length: 1.9"Gas Port Diameter: .081Barrel Extension: M4 Weight:  1 lbs 5.7 ozMagnetic Particle Inspected!11-degree Target Crown

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$236.55 at Rainier Arms
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