ShaloTek Spiral Fluted Barrel w/o LCI P365XXL 4.1in 9 Black Nitrided. All of our barrels are manufactured in-house right here in the state of Georgia. These barrels are meticulously crafted to reduce tolerances between OEM parts ensuring the most optimal fit and performance for your P365 firearm. Specifications for ShaloTek P365XXL Spiral Fluted Barrel w/o LCI: Manufacturer: ShaloTek Color: Black Finish: Nitride Fabric/Material: 416 Stainless Steel Caliber: 9mm Luger Gun Make: SIG Sauer Gun Model: SIG Sauer P365 Barrel Twist Rate: 1-10 RH Weight: 2.6 oz Features of ShaloTek P365XXL Spiral Fluted Barrel w/o LCI ShaloTek barrels are made to perform best with ShaloTek parts and OEM parts Barrels are Black Nitride coated Package Contents: ShaloTek P365XXL Spiral Fluted Barrel w/o LCI What firearm models does the manufacturer say ShaloTek P365XXL Spiral Fluted Barrel w/o LCI is compatible with? The manufacturer says that ShaloTek P365XXL Spiral Fluted Barrel w/o LCI is compatible with SIG Sauer P365ShaloTek B-365XXL-NLCI-01-9F: Spiral Fluted Barrel w/o LCI P365XXL 4.1in 9 Black Nitrided