No Batteries No Switches Always Ready When You Need Them. Daytime Confidence Under Low Light Conditions. TRU-DOT for Rapid Instinctive Aiming. MEPROLIGHT combat proven self-illuminated night sights enable you to hit stationary or moving targets?under low-light conditions with dramatically increased hit probability. Test results by marksmen and journeymen level shooters have shown an increase of over 85% in hit efficiency, using MEPROLIGHT self-illuminated. TRU-DOT models offer a handgun sighting system for improved rapid instinctive aiming which requires no transition from day to night use. Day and night, the shooter&';s aiming reference is three solid dots, identical in appearance and location under all light conditions. Front sight only.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }