FAXON Firearms AR-15 Gunner Barrel, 14.5", 5.56 NATO, Mid-Length, 4150 QPQ

All Faxon Firearms barrels
Faxon Firearms Ar-15 Gunner Barrel, 14.5", 5.56 Nato, Mid-Length, 4150 Qpq - Barrel for AR-15 - view 1
Faxon Firearms Ar-15 Gunner Barrel, 14.5", 5.56 Nato, Mid-Length, 4150 Qpq - Barrel for AR-15 - view 2
Faxon Firearms Ar-15 Gunner Barrel, 14.5", 5.56 Nato, Mid-Length, 4150 Qpq - Barrel for AR-15 - view 3
Faxon Firearms Ar-15 Gunner Barrel, 14.5", 5.56 Nato, Mid-Length, 4150 Qpq - Barrel for AR-15 - view 4
Faxon Firearms Ar-15 Gunner Barrel, 14.5", 5.56 Nato, Mid-Length, 4150 Qpq - Barrel for AR-15 - view 5
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Faxon Firearms

Overview

The Faxon Firearms AR-15 Gunner Barrel is a 14.5-inch pencil profile barrel designed for the 5.56 NATO caliber, making it lightweight and versatile for various applications. Its mid-length gas system provides a balance of reliability and recoil management, while the 1:8 twist rate ensures stable bullet performance across a range of projectile weights. This barrel is commonly found in builds prioritizing a mid-length gas system and chambered in 5.56 NATO, ideal for both tactical use and recreational shooting.

Specifications

MPN15A58M14NGQ
FinishBlack
Gas System LengthMid-Length
Gas Block Diameter.625
Barrel ProfilePencil
Thread Pitch1/2x28
Barrel Length14.5
Caliber5.56 NATO
Twist Rate1:8
CoatingNitride

Available Merchants(7)

Prices checked

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Ammunition Depot logo
Ammunition Depot
~$28.90 est. shipping
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In Stock
$149.49
Brownells logo
Brownells
Free shipping
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In Stock
$156.40
AT3 Tactical logo
AT3 Tactical
Shipping TBD
Shipping Speed
In Stock
$156.40
Palmetto State Armory logo
Palmetto State Armory
Free shipping
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Out of Stock
$156.99
Optics Planet logo
Optics Planet
Free shipping
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Out of Stock
$167.00
Primary Arms logo
Primary Arms
Free shipping
Shipping Speed
Out of Stock
$167.00
BattleHawk Armory logo
BattleHawk Armory
Shipping varies
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Out of Stock
$167.00

Build history on GunPartPicker

Builders have added the FAXON Firearms AR-15 Gunner Barrel, 14.5", 5.56 NATO, Mid-Length, 4150 QPQ to their builds on GunPartPicker. Since April 2026, it ranks #507 of the 1,047 barrels builders have added.

Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, but today 3 of the 7 retailers we track have it in stock. Buying today, the lowest price is $149.49 at Ammunition Depot.

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Builds Featuring This Part

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Builds in the community that include the Faxon Firearms Ar-15 Gunner Barrel, 14.5", 5.56 Nato, Mid-Length, 4150 Qpq

BuildPartsTotal
14.5" pistol build
14.5" pistol
19$1639.71

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