I'm in the process of purchasing a used SR22, in Canada so various rules apply. In the picture it has the short slide with a long barrel that extends out past the end of the slide, with a threaded cap visible. Barrel length is stated to be 4.25" which is long enough to be legal in Canada (105mm, or 4.13" minimum barrel length). Serial number is 365-59592, which I think puts it around 2015, possibly prior to the release of the 4.5" version of the SR22. I wondered if this is a Canadian variant made by Ruger for the Canadian market, but there is no mention on the Ruger website. Anyone ever heard of such a thing?
Brian
Brian