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. Tro-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. Designed as replacement parts for the standard weapon sights, Meprolight's self-illuminated night sights can be mounted directly with minor modifications. Superior production methods and rigid quality control have made Meprolight the first choice among law enforcement agencies, defense decision makers and major weapon manufacturers. A full quality program, certified to ISO-9001:2008 and complying with NATO and US Military Specifications are in place. All products and processes at Meprolight are performed, controlled and monitored to these demanding quality levels. Originally developed for the Israel Defense Forces, Meprolight sights are now in use by military, law enforcement and civilians on six continents. Meprolight's modern design, production and test facilities, with the most experienced technical staff in the industry are ready to support you. When quality counts, be sure with Meprolight responding to users needs.Features: Totally integrated day/night sighting Tru-Dot for rapid instinctive aiming Lightweight Energy efficient Withstand heavy recoils Highly durable structure No batteries - no switches - always ready when you need them Daytime confidence under low light conditions Maintenance freeSpecifications: Type: Self Illuminated, Fixed, Front/Rear Series/Collection: Tru-Dot Material: Tritium Front and Rear Color: Green Front and Rear, Black Frame For Use With: Smith & Wesson M&P 9/40 Full Size/Compact Pistols