Try searching for the specific type you want. I have a Yugoicon so that's what I looked for and picked up the sling mounted oiler at the same time along with the other odds and ends.

I would think most companies will ship to Canadaicon and may be the ebay crowd that won't but some of them will if you're willing to pay a bit more for the shipping.

I didn't save the paperwork so I can't recommend the place I bought mine. I believe it was an ebay purchase from a guy that sells a lot of slings. I've gotten several that way.