Trijicon Suppressor/Optic Height Sights continue the low-light and no-light prowess of the original Bright & Tough Night Sights. With unique versatility for the ever evolving pistol landscape, Trijicon Suppressor/Optic Height Sights are designed for pistols fitted with suppressors and also as a backup iron sight for pistol-mounted red dots. FeaturesIncreased height to accommodate multiple shooting applicationsInstantly visible sight picture in no-light and low-light situationsIncreased daylight dot visibilityEnhanced protection from heavy recoil and harsh cleaning solventsEvenly distributed light from tritium lamps