In a few of my academic papers I have tried to assess that. That is a very difficult question to answer. Import and export records suggest there are somewhere between 20 million and 30 million firearms in Canada. If we've registered seven million, that leaves quite a few unregistered.
The import and export numbers undoubtedly overestimate the number of legal guns that came into Canada. If we do surveys we come up with something in the order of 15 million firearms. And survey estimates, by the way, are probably underestimates.
So my best estimate would be something between 15 million and 20 million, which would probably be a rough estimate. It may be smaller than that, say 15 million to be conservative.