No.
No, you do not need a gun license to buy magazines.
yes
No, Only certain online tattoo supply shops require you to have a licence to purchase their equipment. But most don't ask.
no
Yes, you do not need a gun license to buy a clip, but you may need one to legally possess and use it depending on local laws.
no
yes, you just need a license
Generally, no.
No ... but their may be an age requirement.
No.
It would depend on what state you live in ... but in most states you would not need a license ot own a softair gun ...
You don't need a gun license if you are 25 but if your under 25 you do need a gun license