And guess what....Constable Bob won't charge you with Posession of Prohibited device because RCMP know damn well that they goofed on that call re:10/22 mags and the first person that fights it in court will win and set the precedent and overturn their nonsense prohibited device declaration.
So instead they use intimidation and issue warnings and tell you to get that menace to public safety 25rd rimfire magazine pinned to 10 or yer gonna be in BIG trouble next time Mister.
