Zaffiri Precision Stainless Steel Slides were designed with tight tolerances to increase accuracy and performance. There are different optic configurations and variety of coatings for a customized look. These are among the best aftermarket slides available for Sig Sauer. This slide has been coated and optic cut, no additional changes can be made. Optics Cut: Trijicon RMR / SRO and Holosun 407c / 507c and other popular RMR footprint optics mounting position is in front of the factory location of the rear sight (dovetail remains behind the optic cut). Includes black anodized cover plate. Slide comes with proper mounting screws specific to the optic. You must use the screws we provided. Blue Loctite recommended for proper sight retention. Do not exceed optic manufacturers screw torque specifications. Specifications for Zaffiri Precision P320C ZPS.2 RMR Cut Slide: Manufacturer: Zaffiri Precision Gun Make: SIG Sauer Gun Model: SIG Sauer P320 Compact Cartridge: 9mm Luger Gun Frame Size: Compact Length: 6.25 in Width: 1 in Height: 0.84 in Finish: Cerakote Fabric/Material: 17-4 Stainless Steel Condition: New Weight: 9.3 oz Features of Zaffiri Precision P320C ZPS.2 RMR Cut Slide This slide is NOT compatible with ported barrels. Package Contents: Zaffiri Precision P320C ZPS.2 RMR Cut Slide Black Anodized Optics Cover Plate