I think this is the right place to put this....
If you have played paintball and are looking for something a little bit more extreme, you should try airsoft. Basically it is exact replicas of regular guns, but instead of bullets a high speeds, it is BBs or pellets at moderate speeds. They hurt like a sunuva bitch, but it is fun to try.
http://www.007airsoft.com/
That site is a Canadian manufacturer of Airsoft guns. My brother has one, they are really fun to use in target practice without the hassel of registry.