My friend and co worker was facing two counts of possession of a prohibited weapon because of these.. After over a year of court dates and $7000 on a lawyer he was charged with a single count of possession of a prohibited weapon, given 6 months of probation and his fines total close to $9000... This was in Alberta. The judge told him he doesn't care what he read online, it's a prohibited weapon and will be treated as such everywhere.
Pretty harsh.