rusty - I don't really think you're aware of the legal situations surrounding airsoft. Read the link below on the legality of airsoft. It will explain the 'grey area' that was referred to by others.
http://www.airsoftcanada.com/showthread.php?t=23034
I'm fairly new to ASC, but I bothered reading these guides before posting. And I learned a lot that I didn't know. This community is not simply trying to keep guns out of the hands of minors, they're trying to protect the Canadian airsoft community at large. The age-verification process is a pain in the ass, and the wait can be frustrating. I'm 36, and it took me a while to get my verification process handled. But I waited it out and it's all good now.
Seriously though, if you're looking for airsoft guns for target shooting, I would strongly recommend that you take a look at one of the Canadian airsoft retailers and buy new. Seriously, for target shooting, a stock gun is more than enough. You're not going to really save much buying a stock gun from the classifieds over buying new from a retailer. Where you get great deals here is on upgraded, accessorized and customized gear built for airsoft games. If you don't plan on actually playing the game, then that's pointless for you.