Yes, certainly.
First of all, a possession certificate is used to authorize—or otherwise—an individual to own a firearm. That person is subject to a screening process which allows police or the government to determine that the applicant can own a firearm. It is a process that controls gun owners, as opposed to guns.
So, if there is only a possession certificate, as was the case previously with the firearms acquisition certificate… There is a screening process; we know who owns guns. But if guns are not required to be registered, we don't know what guns are involved or how many.
If there is no registration--