Zaffiri Precision ZP.365XLBTBN 9mm Fits Sig P365Xl 4.30" Black 416R Stainless Steel Zaffiri Precision Match Grade Barrels For SigSauer P365Xl. High Quality Performance demanded With An Easy Drop-In Barrel Upgrade. This Replacement Barrel Is Precision manufactured In The USA To The highest standards providing Exceptional Accuracy. Conventional Rifling With a Polished Chamber And Bore To Perform Well With Lead, Plated, And Jacketed Bullets. This Barrel Is Ready-To-Use And Is a Perfect Replacement For Your existing Sig Barrel. Length: 4.30" Twist: 1:10 LH