most airsoft guns use 20 amp fuses, you can get them at just about any auto parts store or online.
It is not a good policy to over fuse devices. When a manufacturer develops a product it has to go to an underwriters testing division where they self destruct the equipment. It is during this test phase where the safety section determine what it should safely be fused at. By over fusing the equipment by 10 more amps that the equipment was designed to handle is taking the risk of destroying the equipment should a fault current appear. Keep safe and don't do it.
An Airsoft gun
A pump airsoft gun is a gun that has to be pumped every time before shooting. Ex. Airsoft shotgun
No
No
It is an airsoft gun based of the PPSH-41 gun
You never need a license to have an Airsoft gun.
The fuse regulates the power that is sent from the battery to the motor and if there is a surge in power then the fuse will blow and save your motor. This is usually caused by a battery with weak charge or one that has been overcharged.
No, it is an airsoft gun.
NO
No
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!