Owned and operated just outside Atlanta Georgia, True Precision Match barrels are designed to adhere to the strictest tolerances. Made from US sourced certified 416R Match Grade stainless steel, these True Precision Sig Sauer P365 Threaded Barrel, 1/2x28 go above and beyond to be as reliable as possible. True Precision uses broach cut rifling through a proprietary process that ensures both peak accuracy and reliability in their Pistol Barrels. Enhanced rifling techniques, better overall fit, lockup, finish options, and higher quality control standards set our barrels apart from both original OEM designs as well as other aftermarket barrels. New for 2023, all True Precision Sig Sauer P365 Threaded Barrel, 1/2x28 will no longer have the LCI peep hole cut on top. This will assist in keeping pistol mounted optics clean and free from powder blowback and debris escaping from a LCI hole.  Specifications for True Precision Sig Sauer P365 Threaded Barrel, 1/2x28: Manufacturer: True Precision Finish: PVD Fabric/Material: 416R Stainless Steel Barrel Length: 3.76 in Threads per Inch: 1/2x28 Barrel Twist Rate: 1-10 Cartridge: 9mm Luger Barrel Material: 416R Stainless Steel Gun Make: SIG Sauer Gun Model: SIG Sauer P365 Additional Features: 11* Competition Muzzle Crown Included Accessories: Standard Condition: New Rifling Profile: 6 Groove Rifling Features of True Precision Sig Sauer P365 Threaded Barrel, 1/2x28: Easy to install drop-in design fits the P365 (3.1"), P365 SAS, and P365X. Will NOT fit the XL 3.7" pistols or 380ACP P365; Threaded barrel length is 3.76" overall (without thread protector attached); Advanced proprietary broach cut design specifically engineered for increased accuracy potential; Broach cut 6 groove rifling allows for all ammo types to be used safely, including cast lead; 100% manufactured with certified 416R stainless steel; 9mm 1/10RH twist rifling; SAAMI spec chamber; Improved overall fit from OEM with added chamfers, improved radius cuts, and other additions for a better than OEM barrel; Improved feedramp design over OEM for more reliable feeding of defensive ammo; Lifetime performance warranty on function Package Contents: True Precision Sig Sauer P365 Threaded Barrel, 1/2x28 1/2X28" Thread Protector Viton high heat integral O-ring lock