Midway has distributors in many countries, but they most definitely do not have a Canadian distributor.
They second they get the slightest idea they are doing business with a Canadian or that their shipments to individuals in the US will be exported out of the US into Canada, they will freeze your account.
It happened to me. For a while I was buying bullet molds, and other reloading stuff ( not components, as I do not wish to risk a Homeland Security spot check on my way back into Canada and get permanently banned from the US ).
I was using a freight forwarding address, a package receiving warehouse that allows you to use their street address. 99% of my Ebay purchases are shipped this way, and my sellers think they are shipping to a US residence. I am sometimes forced to this because a lot of Ebayers refuse to ship outside the US.
Anyway, one day in phoned in an order to Midway using my account number. The clerk seemed to hesitate, and put me on hold for a few minutes. Came back apologetically, and said they can not ship to Canadians. I said you are shipping to a US address, not Canada. They responded that their records showed that the shipping address associated with my account was found to be a border forwarding address which it of course was.
I asked why did that make a difference. They said they are prohibited from shipping ( even a grip screw ) if there is any possibility that their item will eventually be exported out of the US.
If they went to the trouble to do a spot check of my legitimate US shipping address, it ought to give you a clear idea of how afraid Midway is of getting fined or worse. The whole thing is rather unfortunate.