I think I can answer that.
The bill, as introduced, does not deem these firearms to be non-restricted. What happens is that the original deeming provision that's currently in the Criminal Code would be repealed and what would apply would be the legal classifications, the definitions that are set out in the Criminal Code, so it wouldn't be a deeming provision.
Grandfathering is a separate concept from deeming. Grandfathering is a regime that applies when a firearm goes from one classification to a more restricted classification. So it doesn't change the classification of the firearm. What it does is permit possession of these firearms for the original owners. It doesn't change the legal classification of the firearm. It just permits a closed group of individuals to possess that firearm.