Meprolight FT Bullseye Tritium Self-Illuminated Rear Night Sight Smith & Wesson M&P Green Circle-Dot 0. 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 has the feel of a red dot sight. These Meprolight 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 IWI Glock and others. Its ultralight snag-free design is easy to draw and gives you instinctive aiming under pressure. Specifications for Meprolight FT Bullseye Tritium Self-Illuminated Rear Pistol Night Sight: Manufacturer: Meprolight Color: Black Fabric/Material: Tritium Gun Type: Handgun Illumination Type: Fiber Optics Mount Type: Dovetail Features of Meprolight FT Bullseye Tritium Self-Illuminated Rear Pistol Night Sight: Smallest optical sight in the world based on patented optical illumination; Superior visibility in all lighting conditions; No front sight needed; Fast and intuitive target acquisition; Fits most existing holsters; Simple easy installation on existing pistol dovetail; No Batteries - No Switches - Always On- Always Ready; Nighttime Illumination guaranteed for 12 years Package Contents: Meprolight FT Bullseye Tritium Self-Illuminated Rear Pistol Night Sight Meprolight 631203108: FT Bullseye Tritium Self-Illuminated Rear Night Sight Smith & Wesson M&P Green Circle-Dot 0631203108