From what I've read, Mossberg won't export these to Canada due to the mag capacity and they don't want to bother plugging it for 5rnds. The only way to get them up here is through a US importer. IRG brings them up but from what others have said, Mossberg won't honour the warranty and I believe one guy said they didn't want to sell him a replacement roll pin. You'll have to go through IRG to handle your claim ie LONG wait. This was one of the reasons I haven't bought one.
Do a search in this section and you should be able to find the old JM Pro thread.