PLEASE NOTE: If your stock rear sight DOES HAVE the Ruger logo stamped on it, these are the Williams Firesights you will need.If your stock rear sight DOES NOT have the Ruger logo stamped on it, pleas ... moree see this part listing: 0303N0020LTE1 found HEREAt a glance:Fiber Optic sights for improved sight picturePrecision made out of Blued Steel and Aluminum""Click"" elevation and windage adjustmentsEasy to installThese fiber optic sights are specifically crafted to fit your Ruger MKIII 22/45 LITE and outperform the standard Ruger factory iron sights. They collect surrounding light rays to offer you superb visibility even in dark conditions. Features bright green fiber optic rear dots and a bright red fiber optic front dot that will give you a crisp, clear sight picture. Super easy installation as well. Speed up your target acquisition and improve your accuracy today with Williams FireSights!