Meprolight Tru-Dot Remington Night Sights for Remington Shotguns are a combat-proven system for low light targeting. The revolutionary Meprolight system of self-illuminated tritium night sights enables you to hit stationary or moving targets under low light conditions with dramatically increased hit probability. Test results by marksmen and journeymen-level shooters using Meprolight Tritium Night Sights have shown an increase of over 85% in hit efficiency compared to conventional sights. Tritium nightsights rely on a tritium power source that functions in all temperature conditions, and add no weight to the weapon system.