Product Description Upgrade your SIG Sauer P365XL with a True Precision threaded 9mm barrel engineered for personal defense and enhanced accuracy. Built as an easy-to-install drop-in option for the P365 XL (3.7") platform, this barrel features an advanced proprietary broach-cut design and a SAAMI-spec chamber for consistent performance across a wide range of ammunition, including cast lead. Manufactured in the USA from USA-sourced certified 416R stainless steel and finished in Copper TiCN, it includes a 1/2x28 threaded muzzle with an included thread protector for suppressor or compensator use. Product Highlights Drop-in fit for SIG Sauer P365XL (3.7") pistols (P365 XL version only) Proprietary broach-cut, 6-groove rifling designed to increase accuracy potential 1/2x28 threaded muzzle with included thread protector and high-heat integral O-ring SAAMI-spec chamber and 1:10 right-hand twist for dependable 9mm performance Made in the USA from USA-sourced certified 416R stainless steel with Copper TiCN finish Specs Brand: True Precision Manufacturer Part Number: TP-P365XLB-XTC UPC: 719104537984 Type: Handgun barrel Compatibility: SIG Sauer P365 XL (3.7") Caliber: 9mm (9mm Luger) Material: 416R stainless steel (USA-sourced) Finish/Color: Copper TiCN Rifling: Broach cut, 6 groove Twist Rate: 1:10 RH Threads: 1/2x28 Thread Protector: Included (Viton high-heat integral O-ring lock) Chamber: SAAMI spec Barrel Length (chamber to muzzle): 4.22 in Country of Manufacture: USA Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&&';;s manufacturer.