Faxon Firearms 10.5 inch Government / Socom Barrel – 5.56 NATO – Carbine Length – 4150 QPQ

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Light Profile Barrel – Tough Performance

Built from 4150 CMV Steel – this light profile barrel is meticulously tested to ensure optimum accuracy. Coated with QPQ from inside and out for superior corrosion resistance and endurance. The perfect choice for first time builders or those building all-around weapons.


  • For just over a pound, this barrel is lighter than most competing brands. Save on weight while getting the same optimum performance!


  • Button-rifled and Air-gauge tested to ensure exceptional accuracy.

Tough Finish

  • Coated with QPQ from the inside and out – this barrel is undeniably durable and corrosive resistant.


Material: 4150 CMV Steel
Type: Button Rifled
Caliber: 5.56 NATO
Twist: 1:8
Length: 10.5″
Profile: Light
Gas System: Carbine
Inside Finish: QPQ Nitride
Outside Finish: QPQ Nitride
Muzzle Thread: 1/2-28 TPI (Threads Per Inch)
Gas Block Diameter: .750″
Gas Block Journal Length: 1.1″
Barrel Extension: M4
Weight: 1.10 lbs
Magnetic Particle Inspected!
11-degree Target Crown

Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Faxon Firearms Warranty

We do understand that life happens and that often a purchase will need to be returned. Customers may return any product, for any reason, in line with the requirements & policies below.

For any errors on Faxon’s part, after notification from the customer, Faxon will dispatch a Fed-Ex Ground label for the return of the product. Upon receipt and inspection at Faxon, a replacement will be sent to the customer via Fed-Ex Ground with tracking information sent to the customer.


  • Faxon will only refund products purchased directly through Faxon Firearms.
  • If you purchased a product through one of Faxon’s authorized dealers and would like to return the product for a refund, you must contact the dealer for your refund.
  • Merchandise must be in new condition with original packaging
  • Merchandise must be return-shipped in a protective box
  • A full refund including shipping if the return resulted from our error, otherwise we will deduct the shipping costs from the refund.
  • All product replacements done under warranty can be handled by Faxon directly.
  • The customer will receive a refund within 10 business days of our receiving your return. The refund issued in the same form of payment used for purchase.
  • No return will be granted for a product that is modified in any way
  • No returns for refund after 30 days from the delivery date of the product.
  • There will be a 15% restocking fee on all returns.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.

Customer Reviews

Based on 3 reviews
Faxon Pistol barrel

I am using this barrel for a AR pistol and love Faxon. Quality, Value and accurate! AT3 had it and it was a great price during the covid summer! Shipping was fast!


Got my barrel right away....

Love Faxon

I own a few Faxon barrels. They are my go to barrel manufacture. AT3 had a great price and in stock. Received barrel within a few days! Thanks much,when I need something again I'll be back.

We appreciate your feedback, Alex! We'd love to have you back. -- LM