Zaffiri precision match-grade barrels for Sig Sauer P365 offer an unparalleled upgrade for firearm enthusiasts seeking superior performance and precision. Crafted in the USA, these barrels are engineered to meet the highest standards, ensuring exceptional accuracy and reliability. Featuring conventional rifling and a meticulously polished chamber and bore, they are designed to deliver outstanding results with lead, plated and jacketed bullets alike. This drop-in replacement barrel is not only easy to install but also enhances the overall shooting experience, making it an ideal choice for those looking to elevate their Sig Sauer P365 to new levels of excellence. Whether you're a competitive shooter or a dedicated hobbyist, Zaffiri precision barrels provide the quality and performance you demand. Compatibility: Sig P365 - drop-in Fit for 9mm Ported barrel - exclusively compatible with ZPS.4 and ZPS.P slides Threadless flush and crown length SAAMI specification chamber Material specification - 416R stainless steel Rifling - broach-cut - six groove Twist - 1:10 Subjected to stress relief and heat treatment to achieve a Rockwell hardness of RC 40-42 Target the crown and the oversized lock-up area Enhanced chamber support and optimized feed ramp design The conventional rifling features a polished chamber and bore, optimized for performance with lead, plated and jacketed bullets A large "ZP" logo is machined on the port side of the lockup Manufactured in the USA