I have a theory;
It's a two pronged assault -
Bill S-223 is still sitting in the senate; it's hardly dead. In that bill, the only firearms you are allowed to possess "at home" are .22 rifles.
The RCMP are now stripping down the configuration of what those .22 rifles would consist of.
After they are done with this fiasco, they'll use the same warped logic to move on to further prohibiting mags and firearms that are on their hit list.