Employing a glare-reducing black serrated rear sight paired with a tritium ProGlo front sight, the Hackathorn Sights are designed for quicker front sight acquisition and maximized concentration on the front sight blade. Features : "Green tritium" .140" wide with orange outline front" "Black serrated" .150" wide square notch rear" GLOCK is a registered trademark of GLOCK Inc. 3CR Tactical is not affiliated with, endorsed by, or sponsored by GLOCK Inc. Any reference to GLOCK products is for identification and compatibility purposes only.