Ameriglo’s Trooper Series of handgun sights take much of their design from the sights selected by the Federal Government for duty use. The Trooper Sights offer a traditional three-dot design; the front sight is composed of the ProGlo sight with a green tritium lamp (available with either an orange or LumiGreen outline), and the rear sight features two dots (available with and without tritium) with a subdued square-notch to promote front sight focus. Features of the Trooper Sights: Modeled after sights used by Federal Government Traditional three-dot design Front sight: ProGlo sight with a green tritium lamp (available with either an orange or LumiGreen outline) Rear sight: Features two dots (available with and without tritium) with a subdued square-notch to promote front sight focus Ameriglo Trooper MOS Green Tritium 2-Dot w/Black Outlines .276"H .165 Sq Notch Rear Sight for Glock (Excl. 42,43,48) GL-875R