Night Fision Perfect Dot Night Sight Set w/Front U Rear Yellow Front w/Green Tritium Black Rear w/Green T Fits Smith & Wesson M&P SHIELD .40/.45/9mm. These Pistol Parts created by Night Fision use tritium as the power source providing a bright ring around each vial of tritium that doesn't require external power to run making this type of illumination one of the most reliable on the market. While the Night Fision Perfect Dot Tritium Gun Sight Set contains some aluminum vials the patent-pending injection molded sleeve design holds the vials securely in place and results in a brighter and more durable ring. These Night Fision Perfect Dot Tritium Illuminated Gun Sights use steel manufactured in accordance to the strictest quality-control measures making them incredibly rugged and reliable for years to come. If you're looking to enhance the look of your handgun look no further than this Night Fision Perfect Dot Night Sight Set U Rear S&W. Specifications for Night Fision Perfect Dot Night Sight Set U Rear S&W: Manufacturer: Night Fision Gun Make: Smith & Wesson Color: Black Sight Style: OEM Height Fabric/Material: High Quality 4140 Steel Additional Features: U Rear Finish: Polymer Features of Night Fision Perfect Dot Night Sights: Perfect Dot Night Sights with added daytime florescence. Brightest Tritium Night Sights on the market. CNC Machined out of high quality 4140 steel. Black Nitride coating used to improve wear and corrosion resistance. Installation: Contact Professional Gunsmith Maximum nighttime visibility through the use of tritium self-powered illumination. Brighter than leading competitors through use of 30percent more tritium. Scientifically engineered colorants in the Perfect Dot provide optimal visibility in daylight. Unparalleled durability. Innovative Perfect Dot provides a consistent brilliant outline that won't flake chip or wear over time. Package Contents: Night Fision Perfect Dot Night Sight Set w/Front U Rear Pistol Sights Night Fision SAW-202-007-YGZG: Perfect Dot Night Sight Set w/Front U Rear Yellow Front w/Green Tritium Black Rear w/Green T Fits Smith & Wesson M&P SHIELD .40/.45/9mm Models