I dont know if they make them,but I think they make the barrel change for the 10/22 magnum to convert it and the 17mach2 for the regular 10/22 I think if I'm not mistaken.
Som ewere made and with all intentions of being a production model. Advertising was done as well showing the gun. Issues arose with the xtraction/rcoil pressure curve so it didn't get any further. Manuals were simply printed in anticipation of the model becoming available.
As said, a 10/22M can be converted easily enough with a new bbl and bolt handle or Volquartsen makes one.