The Zaffiri Precision Complete Upper includes a slide, barrel, internal parts, and sights. Single billet 17-4 stainless steel slides are made with tight tolerances increasing accuracy and performance. These are among the best aftermarket slides available for Glock.Fits Glock 19 - Gen 3 frame. Also compatible with Polymer 80 - PF940c 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 included Note - This Glock 19 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 we provided. Blue Loctite recommended for proper sight ...