I've brought guns in from HK, it's just a matter of knowing what to do, as spoken. BEWARE if you're going to do it by mail. Prohibited Importations Unit in Mississauga has no efficient means of testing modified guns at this time, AEG or otherwise. It will sit there until they do. I have been talking to them alot recently, turns out i have to either wait to have my gun tested (6 months or so)... it's a FinCode budget thing with CBSA, or ship it back to HK for refund (which most sites don't do) so needless to day i'm not getting my G&P SR25 any time soon.
just giving a heads up.