Faxon 5.56 NATO 18″ SOCOM Barrel

Faxon 5.56 NATO 18″ SOCOM Barrel

$179.00 $168.26

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18″ Gov’t / Socom, 5.56 NATO, Rifle-Length, 4150 QPQ
Availability: Out of stock SKU: 15A58R18NSQ

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Faxon 5.56 NATO 18” SOCOM Barrel

Faxon 5.56 NATO 18” SOCOM / Gov’t profile – The rock Faxon is built upon!

Manufactured 100% in-house from gun-barrel-quality bar-stock, the Faxon 5.56 NATO 18” SOCOM Barrel starts with 4150 Chrome Moly Vanadium Mil-Spec steel. From there, the barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. This beautiful 5.56 NATO 18” SOCOM barrel is individually checked for headspace by precision custom hardened gauges.

Faxon manufactures all barrels in Cincinnati, Ohio under our ISO:9001 and AS:9100 quality certifications.


Product Specifications

  • Manufacturer: Faxon Firearms
  • Part #: 15A58R18NSQ
  • UPC: 816341020177
  • Barrel Material: 4150 CMV Steel
  • Barrel Type: Button Rifled
  • Caliber: 5.56 NATO
  • Twist: 1:8
  • Length: 18”
  • Profile: SOCOM
  • Gas System: Rifle
  • Inside Finish: QPQ Nitride
  • Outside Finish: QPQ Nitride
  • Muzzle Thread: 1/2-28 TPI (Threads Per Inch)
  • Gas Block Diameter: .750″
  • Gas Port Diameter: .093″
  • Journal Length: 1.9″
  • Barrel Extension: M4
  • Weight: 1.86 lbs
  • Magnetic Particle Inspected!
  • 11-degree Target Crown
  • MSRP: $179.00

Arm or Ally is a stocking dealer for all Faxon Firearms, Ballistic Advantage, Rosco Manufacturing, Aero Precision, Toolcraft, Elftmann Tactical, HIPERFIRE and more. See our growing inventory of AR Parts and Reloading Components.

Additional information

Weight26 oz
Dimensions19 × 2 × 2 in
Barrel Finish

QPQ Nitride


5.56 NATO




4150 Chrome Moly Vanadium

Part Type

Barrel, Upper Receiver Parts



Muzzle Thread

1/2 x 28

Gas Block Diameter


Twist Rate


Gas System


Barrel Length


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