While most of the discussion is centering about background checks and prohibited persons, I notice that their is something not being mentioned, and its the one piece of "Paperwork" you most need to see. And, it has NOTHING to do with the criminal status of the prospective purchaser!!!
Proof of
residency. Aside from what ever additional State requirements there are, this one is Federal, and its a minimum. If you and the buyer are not residents of the same state, that's a deal breaker, for a completely private transaction. If you reside in different states (and this applies even if you can see his house from yours), if his residence is in a different state, you MUST go through an FFL (at least one, and possibly two) dealer(s) to make the sale, legally.
Now, current law does not specify that you have to physically see a certain piece of paper, it (still) allows you to use your own judgement as to what satisfies you. Just the same way it USED to do about the buyer's status as a prohibited person, BUT NO LONGER DOES...
It used to be that the law prevented you from selling to anyone you "know or suspect" to be prohibited from having the gun. What met those standards was up to YOU, and I.
Yes, there was always an element of risk in that. But there is always an element of risk if you are involved in an investigation run by lazy, ignorant, or incompetent cops. A bill of sale, or whatever other record you have is not a guarantee to keep you off their suspect list. Sure, it goes a long way, but its no guarantee.
Another of the things all the current private sale background check laws/proposals do that really irritates me, is requiring the check, and forcing me to pay a 3rd party to have it done. Buy from and FFL, he runs the check (and does not charge you separately), he's required to, as one of the conditions of his license.
And I'm fine with the fact that the FFL should be fairly compensated for his work processing a transfer when he's not making a gun sale, but I don't think that I should be the one paying for that.
If the law requires me to do it, then the law should pay for it. Just my opinion, though. I feel the same way about auto insurance, but that goes no where, either...
back to being allowed to use one's own judgement...currently I can still do that, about what I accept as proving a potential buyer is a state resident. But I can't do that about someone I know is NOT a prohibited person, the law doesn't allow for that anymore, it only accepts the check run by an FFL as proof of innocence. And the system used is flawed, and has been since its creation. yet its the only thing that satisfies the law.
The idea of being able to know if the person buying a gun is legal to do so, is a good one. The way the law(s) were/are written and the system used to satisfy those laws are not so good.