Probably ban and new purchase and grandfather existing owned.
New Zealand and Quebec registry are both complete failures, of course they will never mention that in Main stream Media.https://ipolitics.ca/2019/10/03/liberals-dedicate-250-million-for-assault-rifle-buyout/
Buy them back with your taxes......
Look to NZ, sure the Turd won't want to be out virtue signaled by the wack job down under....
Signed and shared the hell out of it on Facebook