Depends on the law where you are. We get questions from all 50 US States and at least a dozen other countries. The laws are different in different places. And YOU did not tell us where you are. Sorry-
Yes, you can buy a gun case for anyone.
No
Depends on where you are. In MOST of the US, there is no requirement to have a permit to buy a gun. You must be an adult and pass a background check.
No
No
No.
You don't need a permit to buy a gun in Oklahoma, if you mean concealed carry permit I think it depends on what crime you are wanted for.
buy (gun here) e.g. buy ray gun
A concealed weapons permit is only a license that allows you to carry a firearm in public without it being clearly visible. Owning a firearm is a completely different set of permissions, and is usually required before you can even get a concealed weapons permit.
Only if he has a 'concealed carry weapons (CCW) permit'.
yes Texas has some of the last restrictive gun laws in the us you can buy a semiauto at any gun store but for a fullauto you need a class3 weapons permit and you have to pay 200$ for a tax stamp
In most U.S. states, yes.