A fellow that lives nearby in an adjacent state (IL) wants to buy a used 50 year-old shotgun from me. If he drives to my house in Missouri, can I LEGALLY sell it to him directly, withour using an FFL dealer?

I would copy his drivers license and his Illinois Firearms Card.

The other option is that we both go to a local gun shop, and pay $35 for them to record the sale. They will also charge him 7.5% sales tax.

Jerry