A true Meprolight innovation, and the leader in night sight technology. Mepro Self illuminated night sights are the brightest in the world and approximately 20% brighter than the competition. Precise handling and installing of the Tritium light source and lenses results in purest and clearest sight available. Each unit is custom designed for fit to specific firearm models. A true Meprolight innovation, and the leader in night sight technology Mepro Self illuminated night sights are the brightest in the world and approximately 20% brighte Precise handling and installing of the Tritium light source and lenses results in purest and cle Each unit is custom designed for fit to specific firearm models