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. SPECS Handgun Type: SIG® P365 Barrel Caliber: 9mm Profile: Straight Fluted, Drop In Barrel Material: Stress Relieved 416-R Stainless Steel Barrel Twist: 1:10 Crown: 11-degree Target Crown Rifling Type: Conventional Finish: Nitride