Meprolight FT Bullseye Smith & Wesson M&P Shield Handgun Sight - Green - Runs on instinct. Runs at the speed of sight. The Mepro FT Bullseye 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. Features S&W M&P Shield Feel Of A Red Dot Drop And Shockproof