Fits Gen 1-3 Glock 19 compatible frames. This FDE PVD top-window upper pairs bold styling with a ported crown-cut DLC barrel for reduced muzzle rise and less felt recoil. Finish is full FDE PVD on the slide with matte black DLC on the barrel - a contrast look that holds up against holster wear. Features: FDE PVD top-window slide for Glock 19 Gen 3 Ported crown-cut DLC barrel 3CR Tactical slide completion kit installed Standard-height polymer sights with white front dot Optic cover plate installed Fully assembled and function-tested Ported barrels benefit from a thorough break-in. Run at least 200 rounds of 124-grain or heavier 9mm before moving to lighter ammo - lighter loads during break-in can under-cycle the slide. Confirm your lower is a Gen 1-3 Glock 19 pattern before install. 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.