This backup plan is always in sight. Runs on instinct. Runs at the speed of sight. The Mepro FT Bullseye(TM) sight is the fastest, brightest, and most intuitive tritium fiber optic sights we've ever built. This low-profile single-night-sight design is powered by fiber optics to master the day, while premium-grade tritium handles even the darkest blackout conditions. Aligning with a single central point of focus, the Mepro FT Bullseye(TM) has the feel of a red dot sight. These MeprolightA(R) night sights are drop- and shockproof, built for endless rounds under heavy recoil, and make an excellent upgrade sight to pistols we service like Smith & Wesson, Springfield, Mfg: Meprolight