It depends on several factors: how thick the glass is, weight of the BB, and the velocity (fps) of BB itself. A 0.25 gr plastic BBs at 450 fps can easily broke a small energy drink bottle. There are another factor: the material of the BBs. Metal/glass BBs can broke glass more easily in the same weight and velocity. But A REAL AIRSOFTER wouldn't use those kind of BBs, RIGHT?
Of course it can.
Do you want to shoot pane of glass in the window? Shoot a glass object through the window pane.
No. Airsoft is a type of sport like paintball so airsoft guns you can shoot people. but please shoot responsibly.
If you use airsoft gun in public place or pretend it's a real gun - yes, you can be shoot. Do not use airsoft guns in public places!
You shoot people.
There are no airsoft licences.
no
Yes.
It's not designed to!
no. Airsoft guns could not possibly shoot that fast.
Depends on the laws
YES