It depends on where you are. If you are in the U.S. it depends on the state. Find a reputable gun store or shooting range and ask them to tell you the local laws.
It would depend on what typr of firearm you wish to purchase. It would depend on what typr of firearm you wish to purchase.
at an illegal firearms store? No one here is going to tell you how to acquire an illegal firearm. It is illegal to purchase a stolen firearm or for a felon to purchase a firearm.
NO.
No
You can't.
No.
Yes I have done it.
No not legally.
Yes.
No
Second Amendment
You need a lawyer to get a correct answer.