Fits Glock 19 Gen 1-3 OEM frames and Polymer80 PF940C aftermarket frames. Not compatible with Gen 4 or Gen 5 - the rail cuts and locking block geometry changed. Stripped slide: barrel and internals not included. Flat Dark Earth (FDE) PVD finish is bonded to the slide at the atomic level through physical vapor deposition. PVD holds color through thousands of rounds where cerakote would show wear - a better choice for a daily carry or match build than a display piece. Fit: Glock 19 Gen 1-3 OEM and Polymer80 PF940C frames Finish: FDE (Flat Dark Earth) PVD - atomic-bonded Top window cut for weight reduction and barrel cooling Trijicon RMR optic footprint with cover plate installed Front and rear serrations with chamfered edges Standard Glock dovetail cuts front and rear for iron sights Made in the USA, 3CR Tactical brand Pair with a TiN or rose gold barrel for a two-tone build. Add a 3CR slide completion kit and a Gen 3 Glock 19 barrel from the Frequently Bought Together section to finish the upper. Verify your optic footprint matches the Trijicon RMR pattern before ordering - Holosun 407C/507C and Swampfox Liberty drop in directly. 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. and GLOCK Ges.m.b.H. Neither 3CR Tactical nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of "GLOCK" on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit www.glock.com.