The Norsso Rail Slide is machined from solid 17-4 Precipitation Hardened Stainless Steel billet then heat treated to an H900 designation. Slide ships ready for internals and optic installation. Stripped slide only; sights, optics, internals, or other accessories shown are not included with purchase. FeaturesErgonomic forward and top serrations for easier press checks and slide rackingKnurl-style, textured pockets for tactile feel and gripHandguard style lightning ports on all three sidesMultifaceted contoured front and rear cornersCompatible for 9mm applicationsCompatible with both the old and new style extractor. For use with the 3.7" length 9mm P365XL barrel