Zaffiri Precision ZPS.2, Optics Ready Complete Slide, RMR Footprint, G17 Gen 5 Threaded Barrel, Gold TiN Finish, HD Fiber Sights, Cerakote Finish, Armor Black, For Glock 17 Gen 5, Includes Black Anodized Optics Plate Cover and Screws ZPS.3.17.G5.BLK.CU Zaffiri Precision aftermarket Complete Upper for Glock 17 Gen 5 includes a slide" barrel" internal parts" and sights. Single billet 17-4 stainless steel slides are made with tight tolerances increasing accuracy and performance. 100% American made and manufactured in-house at their facility. These are among the best aftermarket slides available for Glock.