Take it to an authorized repair center
Have you tried shooting slower
Without knowing what is broken, we can't tell you how to fix it.
if its a Pokemon gun yes
buy a new screen.........................
If you are asking about Air Soft, then most likely not. But if you are asking about a BB or pellet gun then Yes it is possible depending on the power of the air gun and where you are struck.
I suggest the you contact an air gun repair shop to have it fixed. Try looking up "Air gun repair" on the web and have them repair it for you.
A blow gun
Yes if it's a Pellet or BB gun, not airsoft. It is possible.
You mean Air rifle? See the link below
Best left to a gunsmith.
Do you mean PPK? What's wrong with it?
I would suggest doing a search on Air gun repair and locate someone near you to fix it but. See the attached link below for the diagram of the air gun FEG-01