The Mepro Evergreen Illuminated sights by Meprolight provides an optimal aiming solution for both day and nighttime shooting. Unlike many other illuminated night sights that rely on tritium, the Mepro Evergreen Sights utilizes a super bright LED illumination source to provide one of the brightest dots available. The front sight features a colorful ring for maximum visibility, and is offered in green, yellow, and orange. The rear sight is available in two variations: a green 2-dot sight with dual LED emitters, and a non-LED blank sight. The Evergreen sights feature a durable metal housing, and offer increased hit probability on stationary and moving targets, as well as enhanced target acquisition. Features of the Mepro Evergreen Illuminated Sights: LED illumination source Increases hit probability and target acquisition Front sight color options: green, orange, yellow Rear sight options: 2-LED green rear sight, blank rear sight Meprolight USA Meprolight Evergreen Glock (All Models) Yellow Ring/Green Pistol Sight Set 83300001