Faxon Duty Series 16 inch .458 SOCOM Gunner Big Bore barrel, carbine-length gas

FAXON DUTY SERIES GUNNER PROFILE 16" CARBINE-LENGTH .458 SOCOM AR15 BARREL

Faxon
SKU:
15A45814C16NGQ
|
UPC:
816341024243
$280.00
(2 reviews)
Current Stock:
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Description

Faxon Duty Series — 16" Gunner Profile .458 SOCOM AR-15 Barrel (Carbine-Length Gas)

4150 CMV Steel • Gunner Big Bore Profile • 1:14 Twist • Nitride Finish • 11/16x24 Threads • .875 Gas Block

The Faxon Duty Series 16" .458 SOCOM Gunner Big Bore barrel brings massive performance and accuracy to the AR-15 platform. Combining Faxon’s signature Gunner Big Bore profile with carbine-length gas, this barrel achieves a perfect balance of power, recoil control, and handling.

Machined from 4150 CMV steel, stress relieved, and Nitride treated inside and out, this barrel is built to endure hard use and harsh environments. Each barrel is Magnetic Particle Inspected (MPI), air-gauge tested, and headspace checked for consistent precision and long-term reliability.

Key Benefits

  • Big Bore Power: Designed for maximum energy delivery and terminal performance in .458 SOCOM.
  • 4150 CMV Steel: Proven military-grade material for durability and heat resistance.
  • Gunner Big Bore Profile: Balances strength, weight reduction, and thermal control.
  • Carbine-Length Gas System: Optimized for reliable function across various .458 SOCOM loads.
  • Nitride Finish: Enhances corrosion resistance and surface hardness for extended life.
  • 11° Target Crown: Improves bullet release consistency for superior accuracy.

Specifications

Caliber / Chamber
.458 SOCOM
Length
16"
Twist Rate
1:14 Right-Hand Twist
Profile
Gunner (Big Bore)
Gas System
Carbine-Length
Material
4150 CMV Steel
Rifling Method
Button Rifled
Finish
Salt Bath Nitride (Inside & Out)
Muzzle Threads
11/16x24
Gas Block Diameter
.875"
Gas Block Journal Length
1.1"
Barrel Extension
Big Bore Barrel Extension
Weight
1.72 lbs
Crown
11° Target Crown

Frequently Asked Questions

What is the .458 SOCOM cartridge used for?
The .458 SOCOM delivers tremendous energy and is ideal for hunting, defense, and short- to mid-range tactical applications.
What’s the advantage of the Gunner Big Bore profile?
It combines the rigidity of a heavy barrel with strategic weight reduction for improved balance and faster handling.
Is this barrel compatible with standard AR-15 parts?
Yes. This barrel fits standard AR-15 upper receivers and bolts designed for the .458 SOCOM cartridge.

Overview: 16" Duty Series .458 SOCOM Gunner Big Bore Barrel

The Faxon Duty Series 16" Gunner Big Bore .458 SOCOM barrel delivers powerful performance with the rugged reliability you expect from Faxon Firearms. Built from 4150 CMV steel and Nitride treated inside and out, this barrel is engineered for long-term durability and consistent accuracy under heavy recoil.

Featuring the Gunner Big Bore profile, carbine-length gas system, and a polished 11° target crown, it’s optimized for balance, precision, and dependability in any environment.

Additional Information
Barrel Material:
4150 CMV
Barrel Type:
Button Rifled
Caliber:
458 Socom
Barrel Length:
16"
Barrel Twist:
1:14
Barrel Profile:
Gunner Big Bore
Barrel Gas System:
Carbine
Outside Finish:
QPQ Nitride
Muzzle Thread:
11/16x24
Gas Block Diameter:
.875"
Gas Block Journal Length:
1.1"
Barrel Extension:
Big Bore
Weight:
1.72 lbs
Crown Type:
Recessed 11-degree Target Crown
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Reviews

  • 5
    458 barrel

    Posted by Chris Hartman on Oct 26th 2021

    It’s a great barrel

  • 5
    16" Gunner, 458 SOCOM, Nitride

    Posted by rYd on Apr 17th 2018

    Another excellent barrel from Faxon. Fit and finish are both excellent. Installed on an AERO Precision upper/lower, it shoots sub 1" groups with SBR, 300 grn. Barnes TTSX bullets. Faxon has become my "go to" barrel for AR builds.