FAXON DUTY SERIES THREADED BARREL FOR P320 FULL SIZE 9MM
FaxonWrite a Review
Faxon
FAXON DUTY SERIES THREADED BARREL FOR P320 FULL SIZE 9MM
Faxon Duty Series Threaded Barrel for SIG® P320 Full Size 9mm Nitride
Faxon’s Duty Series pistol barrels for SIG® P320 are machined in-house from stress-relieved 4150 CMV 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.
The Faxon Duty Series Threaded Barrel for SIG® P320 Full Size delivers rugged reliability and suppressor-ready versatility in a full-size drop-in upgrade. Crafted from stress-relieved 4150 CMV steel with a full salt bath nitride finish inside and out for maximum corrosion resistance, wear protection, and lubricity, this threaded barrel is built for hard-use duty, range, competition, or defensive applications where dependability and accessory compatibility are essential.
Key Benefits
- 4150 CMV Steel: Stress-relieved for maximum 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: Consistent bullet release for enhanced precision.
- Salt Bath Nitride Finish: Exceptional lubricity, wear resistance, and corrosion protection inside and out.
- Threaded Muzzle: Ready for suppressors, compensators, or thread protectors.
- Made in USA: Precision-machined in Faxon's Greater Cincinnati, Ohio facility with ISO:9001 and AS:9100 certifications. Backed by Faxon's Lifetime Guarantee.
Specifications
Why Choose the Duty Series
The Duty Series is engineered for hard-use reliability with tough 4150 CMV steel and a complete salt bath nitride treatment for maximum corrosion and wear resistance. The threaded muzzle adds suppressor or compensator capability while providing enhanced performance and longevity for full-size P320 platforms in defensive, duty, or range applications.
Installation & Compatibility
- Drop-in fit for factory-spec SIG® P320 Full Size slides — no gunsmithing required.
- 1/2-28 threads accommodate common 9mm compensators, suppressors, and adapters.
- Conventional rifling supports cast lead and jacketed bullets.
- Tighter-than-OEM tolerances for improved lockup and accuracy.
- Note: Not compatible with M17 or X Series pistols (including the X5 and X5 Legion).
Frequently Asked Questions
Is this barrel drop-in?
What finish is applied?
Can I use this with a suppressor?
Is cast lead ammo safe?
Overview: Duty Series Threaded Barrel for SIG® P320 Full Size
The Faxon Duty Series Threaded Barrel for SIG® P320 Full Size in Nitride provides rugged, duty-ready performance with suppressor-ready capability in a full-size package. Machined from stress-relieved 4150 CMV steel with conventional 1:10 twist rifling and tighter tolerances, this barrel offers enhanced reliability and accuracy in a drop-in package.
Fully nitride-treated for superior wear and corrosion resistance, threaded for suppressors or compensators, and drop-in ready for P320 Full Size slides, this barrel is perfect for everyday carry, range duty, or defensive use. Backed by Faxon's Lifetime Guarantee and precision-machined in Greater Cincinnati, Ohio.
Warranty Faxon Lifetime Guarantee. Covers manufacturing and material defects to the original purchaser. Excludes damage from misuse, neglect, non-standard ammunition, or modifications. Register your product at faxonfirearms.com/product-registration to expedite service. For purchases through dealers or distributors, warranty repairs are handled directly by Faxon Firearms; refunds must be processed through the selling entity. Full policy: faxonfirearms.com/warranty-privacy-terms/