I've found lots of Mosin parts on e-bay, coming from Finland and other European countries. Sellers there seem to have no qualms about mailing to Canada. Private sellers in the US seem to have given up selling outside their country, probably due to uncertainty about export laws. Commercial sellers down there seem to have varying interpretations. A couple of years ago Numrich sent me P-14 parts with no issue then, a few months later, I had to use a licensed Canadian importer to get them to sell me various parts for another rifle (just springs, etc).
milsurpo