Well what I see with my Idea, is that if we could stop the sales of the good airsoft guns to kids who just get there parents to buy them for the kid, and people who have no intent to play at games, it would stop alot of the immature adults who just want to shoot each other in their backyards or something along those lines. the enforcement problem could be solved with a contract style thing, where once you get "verifyed" by the local club runner, you sign a contract that basiclly says that you will only use the gun for use at games, and will not buy guns for others. if we got the majority of the community behind this, it would not be very hard to inforce, or to impliment.
"Those who have long enjoyed such privileges as we enjoy, forget in time that men have died to win them"
Franklin D. Roosevelt