MEPROLIGHTs combat-proven self-illuminated night sights enable you to upgrade your capabilities to hit stationary or moving targets under low-light conditions with dramatically increased hit probability. Designed as replacement parts for the standard weapon sights, Meprolights Self-Illuminated night sights can be mounted directly with minor modifications. Meprolight leads the world in OEM and after-market self-illuminated sights for handguns. Designed to replace the existing front and rear sights, the highly visible Tru-Dot sights are perfect for daylight, low-light, and nighttime conditions.Features :First choice of leading firearm manufacturersNo batteries, no switches - always ready for actionTritium poweredHighly durable structure