Take it to a qualified repair shop
buy a new screen.........................
Ahh figure out what the problem part is than figure out how to take the gun apart and put it back together from YouTube, an airsoft forum, or from an airsoft website. Than buy the replacement part and put it in the gun. If the gun was bought for under $100 than you would be better off buying a new gun instead.
An Airsoft gun
A pump airsoft gun is a gun that has to be pumped every time before shooting. Ex. Airsoft shotgun
No
This is a very ignorant question. Please state what the problem is with the gun. If you don't, nobody knows what the heck is wrong with it. And if they don't know what's wrong, how are they going to fix it?
No
It is an airsoft gun based of the PPSH-41 gun
Take it to an airsoft shop and see if they can help you.
You will have to find someone who specializes in air gun repair.
You never need a license to have an Airsoft gun.
It depends we're it's not functioning correctly, you best bring your gun back to the retailer and see what they can do