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 shooters aiming reference is three solid dots, identical in appearance and location under all light conditions.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }