I'm going to say no, since the clause they used was originally designed for. Even after modification the mags are still originally designed for the 10/22 and charger pistol (I do not agree with originally designed for charger pistol but that is what the RCMP says).
See this for reference http://www.rcmp-grc.gc.ca/cfp-pcaf/notice-avis-2016-07-27-eng.htm
How can a magazine be designed for a gun that will not exist for 43 years after the magazine was designed?
Why do your think they do not lay charges for the mags alone and it has not seen court? Because it is not legal.
Shawn