Night Fision Perfect Dot Night Sight Set w/Front U Rear Orange Front w/Green Tritium Black Rear w/Green T Fits Springfield XD-S & XD-E. 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 SPR-228-007-OGZG: Perfect Dot Night Sight Set w/Front U Rear Orange Front w/Green Tritium Black Rear w/Green T Fits Springfield XD-S & XD-E