You are NOT liable if the person is not legal or does something against the law as long as you met the above requirements.
What are the rules for selling a ruger mini 14, can I use a DL only,
thank you tom
Here is a link to a generic private sale form I have used in the past. You need to be able to display .pdf. Personally, although I know some people really don't like leaving a paper trail, if they won't fill out something like this I don't sell to them.
http://www.defensivestrategies.org/downloads/PrivateTransferForm.pdf
While I'd prefer not to fill out a bill of sale, I wouldn't let one get in the way of a transaction.... except that one. No way I'm giving a stranger my DOB and all of that other info.
Name, address, phone # is sufficient.