Gun Cuts Apprentice Slide for Glock 19 No Optic Cut Royal Purple. Features 3 windows 1 on the top and 2 sides for lightening and the apprentice patch logo on the top of the slide. Their slides are gen 1-3 compatible and fit all relevant aftermarket models eg. Polymer 80. Specifications for Gun Cuts Apprentice Slide for Glock 19: Manufacturer: Gun Cuts Gun Make: Glock Gun Model: Glock 19 Model Generation: 3 2 1 Fabric/Material: Stainless Steel Features of Gun Cuts Apprentice Slide for Glock 19 Reduced Ejection Port Height Precision Match Grade Tolerances Optic cut options are cut for RMR Footprint RMR Cut Slides Come with optic screws (M3) Heat Treat: Condition 427 Package Contents: Gun Cuts Apprentice Slide for Glock 19 What firearm models does the manufacturer say Gun Cuts Apprentice Slide for Glock 19 is compatible with? The manufacturer says that Gun Cuts Apprentice Slide for Glock 19 is compatible with Glock 19Gun Cuts GC-G19-APP-RPR-NO: Apprentice Slide for Glock 19 No Optic Cut Royal Purple