There is a a thread directly below yours titled
"Bought airsofts in another country - how to get them home?"
This is a direct quote from the initial post.
Originally Posted by digital-ninja
So, to clear up the smoke, I google'd up Customs & Immigration of Canada and found their toll free number. I called them immediately and asked them, "are airsofts allowed to come into Canada"? The woman took a minute to consult the firearms specialist, and she then told me, "if it looks like a real gun, it will be confiscated". That's all she said.
The same statement applies to outside of country importation. If it looks like a real gun it will be confiscated.
If you are interested in more info, please read about airsoft and importation here: