Low Fiber Optic HiViz Front Sight Gives Faster Sight Acquisition- Whether you are hunting or plinking, its often hard to see your front sight against most outdoor backgrounds. The fiber optic core of this HiViz front sight puts a bright glowing dot on your front sight. You see it easily and line up your sights faster for more accurate shooting. This HiViz Litewave sight is especially designed for your Ruger 22/45 LITE. It's .390" height is made for the full bull (no step) contour of the Ruger 22/45 LITE (Not the stepped bull steel barreled 22/45). It works with all 22/45 LITE pistols that have adjustable rear sights. Our bright and ultra-durable LITEWAVE® sights will enhance your confidence and shooting experience. - Fits Ruger 22/45 Lite handguns w/1" Barrel Diameter. (Does not fit the stepped bull steel 22/45 barrels... There's a different sight for that one.)