Faxon Firearms SIG Sauer P365 Threaded Barrel 9mm Caliber 1-10 Twist 416-R Stainless Steel Nitride Black. 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. Specifications for Faxon Firearms SIG Sauer P365 Threaded Barrel: Manufacturer: Faxon Firearms Color: Black Finish: Salt Bath Nitride Fabric/Material: 416-R Stainless Steel Barrel Length: 3.7 in Barrel Profile: Straight Threads per Inch: 1/2x28 Barrel Twist Rate: 1-10 Flutes: Straight Caliber: 9mm Luger Barrel Material: 416R Stainless Steel Gun Make: SIG Sauer Gun Model: SIG Sauer P365 Weight: 0.21 lb Rifling Profile: Conventional Projectile Caliber: .355 Caliber Features of Faxon Firearms SIG Sauer P365 Threaded Barrel 11-degree Target Crown Package Contents: Faxon Firearms SIG Sauer P365 Threaded Barrel What firearm models does the manufacturer say Faxon Firearms SIG Sauer P365 Threaded Barrel is compatible with? The manufacturer says that Faxon Firearms SIG Sauer P365 Threaded Barrel is compatible with SIG Sauer P365Faxon Firearms 365B910NFSOQ-T: SIG Sauer P365 Threaded Barrel 9mm Caliber 1-10 Twist 416-R Stainless Steel Nitride Black