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.
Yes, you can buy a gun case for anyone.
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, you only need a permit if you want to carry the gun in public.
It all depends on the Country and location where you live. In the USA you must be 18 to purchase a BB gun, but no permit is required to buy one.
You need a Firearm Purchaser's ID card- a form of permit. NJ has a LOT of gun laws.
To purchase a gun, no. Anyone can purchase a gun as long as they meet the age requirement, aren't a felon, and don't have any disqualifying misdemeanors.
Not in the United States
Most likely YES. In some states and countries they are not legal to own