A Ruger Single-Six "22 Magnum Only" revolver, circa 1964. Not particularly rare, but not overly popular at the time. Winchester introduced the .22 Magnum Rimfire cartridge in 1959, and Ruger released the .22 "Magnum Only" Single-Sixes in June of that same year. In around 1962 they started offering the 22 convertible revolver with both a Long Rifle cylinder and a Magnum cylinder. The old model Single-Six .22 "Magnum Only" pistols ran from 1959-1969.




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