In the end, I decided to keep the rifle Toronto Airsoft shipped to me.
I still believe they should've been much clearer in communicating that this was an obsolete version (closed bolt) they were trying to get rid of. They're the official WE distributer for Canada, yet they don't stock products that WE has been making for over a year now. That's just... wierd.
As it turned out, this wasn't to be the last problem I'd have with this rifle: On only the third test shot, the plastic receiver cracked - right where the buffer attaches, rendering the entire gun completely unusable.
To be fair, I didn't bother trying to contact Toronto Airsoft about the receiver breaking - that shit happens. It just sucks that this gun was only capable of firing two good shots before becoming little more than an expensive paper weight.
I'll stop short of recommending against dealing with Toronto Airsoft. I have no wish to deal with them again, but you may luck out and have a better experience. I do suggest you take the cautious approach, and ask many questions before you buy.
I never found a phone number on their site, but you might try reaching Toronto Airsoft at 647-342-8566.