I have a nice bill of sale I will share with you. I'm not an attorney nor am I giving you legal advice, but when you read it it covers most all of the bases.
If you don't feel comfortable selling to somebody, don't sell it. There are many good guys on here and you can only background check so far.
A lot of us have current CCW permits, and that's not a guarantee, but there are a lot of good guy's that don't have CCW permits.
Also, Felons are pretty much prohibited from getting a hunting license. You can ask the buyer if they possess a current hunting license and have them show you that.