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FAXON DUTY SERIES THREADED BARREL FOR P320 FULL SIZE 9MM
Faxon
$99.00
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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?
Yes — designed for direct replacement in factory SIG® P320 Full Size slides with no modifications needed.
What finish is applied?
Salt bath nitride inside and out for superior lubricity, wear resistance, and corrosion protection.
Can I use this with a suppressor?
Yes — the 1/2-28 threaded muzzle is compatible with most 9mm suppressors and compensators.
Is cast lead ammo safe?
Absolutely — conventional rifling allows safe use of cast lead bullets.
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.
- Caliber:
- 9mm
- Barrel Profile:
- Drop In, Duty Series
- Barrel Material:
- 4150 CMV
- Finish:
- Salt Bath Nitride
- Rifling Twist Rate:
- 1:10
- Muzzle Thread:
- 1/2x28
- Handgun Type:
- SIG® P320 Full Size
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