I don't mean to sound rude, but it doesn't seem like you've done any research regarding airsoft importation into Canada, there are plenty of people who've tried and failed miserably here on ASC.
The consensus is this:
1.You order from the US.
2.It gets seized by the CBSA, and then destroyed.
3.You get a letter from them stating it was seized and destroyed.
4.From then on everything you import from foreign countries is scanned by the CBSA.
5.You're put on a watch list at customs.
Ár skal rísa, sá er annars vill
fé eða fjör hafa. Sjaldan liggjandi úlfur
lær um getur né sofandi maður sigur.