Fits Glock 19 Gen 3 frames - both OEM and aftermarket Gen 3 frames. Drop-in replacement slide with the Trijicon RMR optic footprint already machined and an anodized cover plate installed. Cerakote finish over heat-treated 17-4 stainless steel. Available in multiple color options to match your build. Features: Trijicon RMR footprint with anodized cover plate installed Lightening cuts on both sides for weight reduction and faster cooling Top window designed for ported barrel compatibility Rear serrations for positive grip during manual cycling Machined from heat-treated 17-4 PH stainless bar stock - tougher than the 416 stainless commonly used for pistol slides Cerakote finish in multiple color options This is a stripped slide. To complete the upper, you will need a Glock 19 barrel, slide completion kit, recoil spring, and sights. Pair with the 3CR Tactical slide completion kit for Glock 19/23 for a straightforward build. New slides may feel tight initially - rack 200+ times on your frame before live fire to allow proper break-in. Verify barrel and frame fitment before range use. See our slide break-in guide for the full procedure. Optic & cover-plate hardware: RMR footprint. Screw specs for reference: cover plate 6-32 x 1/3, optic 6-32 x 7/16. DISCLAIMER: GLOCK is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. or GLOCK Ges.m.b.H. Neither 3CR Tactical nor this site are affiliated with, or endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of "GLOCK" on this page is merely to advertise the sale of aftermarket GLOCK pistol components. For genuine GLOCK, Inc. products, visit www.glock.com.