Zaffiri Precision aftermarket ZPS.3 slide. Single billet 17-4 stainless steel slides are made with tight tolerances that allow an increase in accuracy and performance. 100% American made and manufactured at Zaffiri Precision's facility. These are among the best aftermarket slides available for Glock. FeaturesMachined from billet 17-4 Stainless SteelOptic Cut - Trijicon RMR / SRO and Holosun 407c / 507cSlide is pre-cut and pre-CerakotedBlack anodized optics cover plate includedNote - This slide NOT ported compatible. No parts will be assembled.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 Zaffiri Precision provided. Blue Loctite recommended for proper sight retention. Do not exceed optic manufacturer's...