Meprolight

COMPATBILITY: Compatible with Glock 20, 21, 29, 30, 36, 40, and 41 (S and SF),
GETTING ON TARGET: The MEPRO TRU-DOT fixed Night Sights offer the most reliable illumination for day or night shooting. Premium grade tritium vials make your sights visible in lowlight and nighttime conditions. The Tritium vials are surrounded by white reflective material that maximize the intensity and brightness of the tritium source to ensure fast target acquisition. Both rear and front tritium source appear white during the day and green, orange or yellow on lowlight and nighttime.
ALWAYS ON: Tritium powered, No batteries, No light needed – Always producing light and always ready 24/7/365. Does not need to be charged with a light source unlike Phosphorus. 3 tritium colors available for the rear sight only: green/yellow/orange (for selected models) whereas only green tritium color is available on the front sight. Maintenance free, can be mounted directly with no modifications.
HIGH DURABILITY: The MEPRO TRU-DOT sights are drop- and shockproof. Made of steel, they make an excellent upgrade to your pistol and gives you instinctive aiming under pressure. Trusted by law enforcement and military personnel over the world, these tritium Sights are reliable in any lighting or weather condition.
12-year guarantee for tritium illumination.