Did a quick search and didn't see anything and I believe the laws have changed recently anyways (or at least new rulings further defining interpretations) so an update to this topic may be pertinent given the popularity of the classifieds here.
As a seller, what is the due diligence requirement in TN for selling to another party in a private transaction not involving an FFL on either side? I know a few years ago it was common to request a HCP flash but even back then, I knew far more gun owners who didn't carry or have a permit than those that did. And now with constitutional carry, I imagine even fewer folks have them. So what are the alternatives? Are we legally liable for investigating someone's ability to legally own prior to a sell at all? I've considered requesting them sign a bill of sale stating they are legally allowed to own the firearm I'm selling them but not sure if this is even useful.
Additional question, best I can tell, the minimum legal age to purchase a handgun in a private transaction in TN is 18, correct?