Ballistic Advantage Threaded Pistol Barrel SIG P365 XL/X Marco Non-Fluted w/o LCI 1-10 Twist 1/2x28 PVD Light Gray. Known for its strength toughness and good ductility our pistol barrels feature a hardened 416R stainless steel material for absolute durability and corrosion resistance. Each barrel is honed lapped and tumbled to ensure it is free of any imperfection and ready for flawless performance with no break-in period required. All barrels are held to less than .0001 deviation of the bore reaching better than factory tolerance for optimum reliability and accuracy. Specifications for Ballistic Advantage SIG P365 XL/X Marco Non-Fluted Threaded Pistol Barrel w/o LCI: Manufacturer: Ballistic Advantage Finish: PVD Threads per Inch: 1/2x28 Barrel Twist Rate: 1-10 Flutes: No Caliber: 9mm Luger Barrel Material: 416R Stainless Steel Gun Make: SIG Sauer Gun Model: SIG Sauer P365 X-Macro SIG Sauer P365 XL Country of Origin: USA Package Contents: Ballistic Advantage SIG P365 XL/X Marco Non-Fluted Threaded Pistol Barrel w/o LCI What firearm models does the manufacturer say Ballistic Advantage SIG P365 XL/X Marco Non-Fluted Threaded Pistol Barrel w/o LCI is compatible with? The manufacturer says that Ballistic Advantage SIG P365 XL/X Marco Non-Fluted Threaded Pistol Barrel w/o LCI is compatible with SIG Sauer P365 XL SIG Sauer P365 X-MacroBallistic Advantage BAPSS65XT1L: Threaded Pistol Barrel SIG P365 XL/X Marco Non-Fluted w/o LCI 1-10 Twist 1/2x28 PVD Light Gray