Here are some pics of my Ruger .22LR semiauto pistols. These are my Standard MkII and the 50th Anniversary, note that the 50th has a stainless bolt and no thumb and forefinger relief as on the MkII. It also has the red eagle on the grips.
These are my MkII 512T and my MkIII 22/45 Target, the MkIII has the rediculous loaded chamber indicator removed and she funtions 100%.