First of all, I'd like to say; Good start on ASC.
Second, I'm not sure about Montreal games but I have heard of the Action500 name tossed around so I assume there are airsoft nights there. Check out here in the Montreal games section:
Just PM the field marshal/admin who's in charge of the night and ask. You may be allowed to sit in or may not so don't get your hopes up but at least it's a good first step and shows maturity (plus this first post probably helps to show you're not some kidiot tool as well).