I love how some people here just spew misinformation out of their asses.
Since original poster is from the Montreal area... there were some police officers from Joliette who played (dunno if they still do), and the SQ has a pretty big paintball team. And I know guys from at least one private security firm here that play airsoft (or use to, anyway... I'm not in that field anymore).
And while everyone is going on about legalities, it'd be good to keep in mind that its the import and sales of replica firearms that's banned; the private ownership and use (in the proper context) is still perfectly legal.