This Zaffiri Precision aftermarket slide is machined from single billet 17-4 stainless steel. These slides are made with tight tolerances that allow an increase in accuracy and performance. Made and manufactured at Zaffiri Precision's facility. These are among the best aftermarket slides available. FeaturesMachined from billet 17-4 Stainless SteelOptic Cut - RMScSlide is pre-cut and pre-CerakotedBlack anodized optics cover plate included Note: This ZPS.2 slide NOT ported compatible. 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 provided. Blue Loctite recommended for proper sight retention. Do not exceed optic manufacturer's screw torque specifications. DISCLAIMER: This...