The True Precision P365 Barrel is precision-engineered for enhanced accuracy in your Sig P365 pistol featuring 9mm caliber chambering and a durable Titanium Copper Nitride finish.True Precision P365 Barrel - 9mm Titanium Copper Nitride3.62" barrel length from chamber to muzzle416R stainless steel construction with proprietary broach cut design6 groove rifling with 1/10RH twist rateDrop-in design fits P365 (3.1") P365 SAS and P365X modelsSAAMI spec chamber for reliable performance100% designed and manufactured in the USAWeight: 2.3oz (without thread protector)Engineered for personal defense applications this precision barrel allows safe use of all ammo types including cast lead delivering enhanced accuracy potential for your Sig P365 platform.