With a few exceptions, that depends on what state and city you live in.
Federal law says 18 for handguns and 21 for long guns.
Owning a gun is not illegal if you follow the laws.
No you dont. but you should just check the laws depending on where you live for the regulations and rules of owning one.. hoped this helps
To sell a gun in Arizona, you must be at least 18 years old and not prohibited from owning a firearm. Private sales do not require a background check, but licensed dealers must conduct one. It is illegal to sell a gun to someone who is prohibited from owning one, such as a convicted felon or someone with a restraining order.
She never mentioned owning a gun.
i had a look and they are illegal
Yes
Yes
Restrictions on owning a hand gun depends on what nation this question is being directed. In the United States the restrictions on owning a hand gun varies in each state. For example, in the state of New York, on is not allowed to own any type of gun while in Arizona one can own anything except a machine gun or army tactical weapons.
there legal
BATFE has what you are looking for.
You will need to be more specific. You have asked about enough laws to fill a phone book. I will suggest you visit a local gun shop at an unbusy time, and talk with the shop staff.