http://www.rcmp-grc.gc.ca/cfp-pcaf/f...me_air-eng.htm
These airgun laws are strictly for classification and criminal code use, and have nothing directly to do with importation, though importation laws will meet or exceed that of the criminal code. It "clearly" states that "possession" of an airgun that resembles a real firearm with near precision, and has a muzzle velocity off less than 366 FPS is considered a replica, and that replicas are prohibited. Then technically speaking, downgrading after importation or purchase, would render your airsoft gun prohibited.