Doesn't stop kids from trying to get them. The supposed setting for most of these comics is Japan, and I thought weapons like this were illegal. But, like I said, it isn't as if it's impossible to acquire something like it.
It is extremely difficult to get a firearm permit in Japan, unless you are a hunter living in northern regions or an olympic level shooter. Even then you can only keep it at home, not take it outside with you.
I am guessing these are either paintball or airsoft.
Okay everyone, on the count of three!
One, two, ...three!