If you're talkign about airsoft, there is no law preventing anyone from buying or owning a gun (as long as it's a Canadian-legal gun with clear receiver) in Canada except Ontario. Ontario has a provinicil law banning the sales of air guns / imitation firearms to minors.
However, reputable stores across Canada won't sell air guns to a minor. And if you intend to play airsoft games, the minimum age is 18 and that's a rule enforced by the airsoft community, not a law.
Last edited by Crunchmeister; March 10th, 2009 at 00:42..