No it's not necessary.
It would depend on what state you live in ... but in most states you would not need a license ot own a softair gun ...
No if the gun is not registered in your name , no you can not own a gun. if you do not have license to own a gun you can not have it either
yes
Private ownership of semi-automatic rifles is prohibited in Great Britain. You cannot buy one, and there is no license to own one. Sorry.
No.
You don't need a gun license if you are 25 but if your under 25 you do need a gun license
In states that require them, it is a license to own (not to carry concealed) a gun.
No.
no
It depends on your state laws. Some places require a license to buy, others may have a license to carry concealed, some do not require a license if you open carry.
In New Zealand you have to be 18 to own a gun licence.
No.