Faxon Match Series Barrel for SIG® P320 Full Size w/ Patented Flame Fluting, 416-R Stainless, QPQ Nitride, Std. Length, Non-Threaded

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(4 reviews)
Current Stock:

Faxon’s Match Series pistol barrels for SIG P320 are machined in-house from stress-relieved 416-R stainless steel. These barrels are then given a black Nitride or PVD coating to increase lubricity, barrel life, and resistance to surface wear. All barrels are conventionally rifled to allow a wider range of ammunition to be used, including cast lead. The barrels drop into factory-spec slides with no gunsmithing required. Better-than-factory tolerances ensure a consistent, tighter lockup than OEM. 

Why Faxon Pistol Barrels?

  • 4150 or 416-R Stainless - Only the best steels for durability, longevity, and accuracy. 
  • 9mm SAAMI Chambers - Superior accuracy with complete SAAMI compatibility & boring reliability. 
  • Tighter Tolerances - Drop-in, yet better fitment and lock-up. 
  • Conventional Rifling - Fully compatible with cast bullets
  • 11 Degree Target Crown

 Technical Specifications: 

  • Handgun Type: Sig P320 Full Size
  • Barrel Caliber: 9mm
  • Barrel Profile: Flame Fluted, Drop In
  • Barrel Material: 416-R Stainless Steel
  • Barrel Twist: 1:10
  • Muzzle Thread: N/A
  • Crown: 11-degree Target Crown
  • Rifling Method: Button
  • Rifling Type: Conventional 
  • Inside Finish: Salt Bath Nitride
  • Outside Finish: Salt Bath Nitride
  • Not compatible with M17 or X Series pistols (including the X5 and X5 Legion)
Barrel Caliber:
Barrel Profile:
Flame Fluted, Drop In
Barrel Material:
416-R Stainless
Salt Bath Nitride
Rifling Twist Rate:
Muzzle Thread:
Handgun Type:
SIG® P320 Full Size


  • 5
    Full size Sig 320 barrel.

    Posted by John B. on Jul 21st 2023

    Fit and finish is far superior to factory. I was having issues with the accuracy of my factory barrel (it just wasn't grouping as well as I thought it should). Caught the 4th of July sale and purchased this barrel and problem solved. Fit and functioned perfectly and shoots like a lazer! Buy with confidence.

  • 5
    Does not fit Sig 320 M17

    Posted by John Schrader on Jan 1st 2022

    I purchased for my Sig 320 M17. I did not realize the M17 version was different. There is a slot in the chamber end of the barrel for the loaded indicator that does not exist in the Faxon barrels.

  • 5
    Faxon Sig P320 Fullsize Flame Fluted barrel, non-threaded

    Posted by Patrick M. Simpson on Dec 6th 2021

    I built a full sized Sig P320 pistol using a Sig Sauer FCU as the basis. The Faxon barrel fit perfectly with no modifications and its flame fluting looks great as the slide of the pistol has side cuts.

  • 5
    P320 full size nitride

    Posted by Edward Johnson on Jul 3rd 2021

    Outstanding barrel.