TPRCSN Barrel, 9MM, Silver, Thread Protector, Threaded, Sig P365XL TP-P365XLB-XT Owned and operated just outside Atlanta Georgia" True Precision Match barrels are designed and made in specialized factories to the strictest tolerances. Made from US sourced certified 416R Match Grade stainless steel they go above and beyond to broach cut their rifling through a proprietary process that ensures both peak accuracy and reliability. Enhanced rifling techniques" better overall fit" lockup" finish options" and higher quality control standards set their barrels apart from both original OEM designs as well as other aftermarket barrels.