Faxon s Match Series pistol barrels for SIG P365 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. The Faxon Duty Series Threaded Barrel for SIG P365 delivers rugged reliability and suppressor-ready versatility in an ultra-compact drop-in upgrade. Crafted from stress-relieved 4150 CMV steel with a full black nitride finish inside and out for maximum corrosion resistance, wear protection, and lubricity, this threaded barrel is built for hard-use concealed carry, duty, or training where dependability and accessory compatibility are essential. Product Features 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. Black 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 Faxons Greater Cincinnati, Ohio facility with ISO:9001 and AS:9100 certifications. Backed by Faxons Lifetime Guarantee. Product Specifications Caliber: 9mm Handgun Type: SIG P365 Length: 3.71" Profile: Duty Series, Drop-In, Threaded Material: Stress-Relieved 4150 CMV Steel Rifling: Conventional, Button-Rifled, 1:10 Twist Finish: Salt Bath Nitride (Inside & Out) Muzzle Thread: 1/2-28 TPI (Threaded) Crown: 11 Target Crown Compatibility: Drop-in for factory SIG P365 slides