Meprolight Tru-Dot Fixed Night Sight Set for Glock G26, G27, and G28 (Orange/Green)The Meprolight ML 10226 Tru Dot Rear and Front Fixed Sights Set is a great accessory for shooters who dont want to pack their rifles up when the sun goes down. These self illuminating sights replace the stock iron sites on Glock G26, G27, and G28 pistols and use a phosphorescent gas called tritium to illuminate 3 sight markers for day and night visibility. The tritium gas eliminates the need for batteries and the sights are guaranteed by Meprolight to