Factory replacement Pro-Cut Slide Assembly for the P320 Sub-Compact/XCOMPACT size pistols. For use with the standard 9mm, 3.6in/3.9/4.7 non-threaded or 4.3in/4.6/5.5 threaded barrels. Optic ready. Compatibility: ROMEO1-PRO, ROMEO2, Delta Point Pro, and RMR (requires sealing plate) footprint. Warning: Its not compatible with .40, .357, or .45 Calibers. Does not void your firearm warranty. This product is the SLIDE ONLY, (barrel and recoil assembly are not included). Specifications for SIG SAUER Pro-Cut Slide Assembly P320 Sub-Compact/XCompact/X-Full Size 9mm Luger w/X-Ray3 Day/Night Suppressor Sights: Manufacturer: SIG SAUER Finish: PVD Fabric/Material: Stainless Steel Condition: New Features of SIG SAUER Pro-Cut Slide Assembly P320 Sub-Compact/XCompact/X-Full Size 9mm Luger w/X-Ray3 Day/Night Suppressor Sights XRAY3 Day/Night Suppressor Height Sights; Durable Nitron Black/PVD Coyote Brown Finish; Stylized Relief Cuts; Removable Optics Plate with Top Accessible Screws; Package Contents: SIG SAUER Pro-Cut Slide Assembly P320 Sub-Compact/XCompact/X-Full Size 9mm Luger w/X-Ray3 Day/Night Suppressor Sights