hehehe :) I whanted to do it and I did it :) My first prototipe of an rubber band airsoft mortar works :) the problem is to pull the inner cartige down, because the rubbers are to strong, and ofcorse it won't go more then maby 30, 40 metters... :) When I find a way to finish it right Ill show some ...

Well, I only read the first and last posts (can't read to long because of eye problem) and let me give my opinion
first, the problem wasn't the Airsoft guns... Ok the midia exagerated and the police too, but the intent to do bad... If he was trying to recruit another boy to do an assault at a school ...

Well, I just don't get it how to make a preasure champer...
can it be done with small CO2 carnisters? airgun type? that 12 something...
and, can we do it with a trigger, to not waste lots of gas when we fire?
you see, I don't know any of this lol and the scematics I find on internet are to high ...

Well, I live in portugal :)
I was thinking on rubber bands yes hehe :) Well, I don't know where to buy some valves :( I already got PVP Pipes and sume rubber bands... but no spinger :( :( The idia is to trow Small PVP BB's (Airsoft tipe, 6mm) to at least 50 metters... no need for more or it will ...

For starters, I'm sory for not looking all the posts, maby ther's one like this already, but Ive just made an eye operation and cant stay at the computer much. I also apology for my english!!

Well, Ive had Ideias for quite some time to make cheep and easy artilhary base Airsoft guns and maby you ...