When did Canada ban firearm suppressors/silencers/sound moderators?

[u/Noah_S_Schwartz]

Hi all. I am a researcher who does work on Firearms Policy. I am working on a policy paper to advocate for legalizing suppressors (as is the case in New Zealand, the UK, and most of Canada's peer countries in Europe).

I'm trying to figure out exactly when Canada banned firearm suppressors, and it's proving more difficult than I thought.

Most commentary or news sources trace the prohibition to the "early 1900s" but don't reference any laws, acts, or statutes - or even a specific year. I have checked the 1919 and 1927 editions of the criminal code, and can find no reference to a ban. It's not until the 1953 edition that Section 84 lays out a clear prohibition.

I've also searched through newspaper databases from that period (Globe, Citizen & Gazette), and the Parliamentary Hansard.

It's clear I'm missing a piece of the puzzle, but I can't seem to find it. Thus, I turn to the great collective wisdom of Reddit.

Any information or ideas would be greatly appreciated.

[u/BlandRusk06]

Good luck with your work! If we succeed in legalizing them, we all owe you a beer.

[u/Noah_S_Schwartz → u/BlandRusk06]

Research is just the beginning, but hopefully the community can use that research as a basis for advocacy.