Checking into who you sell to is as simple as practicing good gun safety. There are a lot of things you can do, but nobody is forcing you to do them (yet). The problem is that the whole gun community should frown upon those who do little or nothing in the way of due diligence. It shouldn't be legally required, but we should darn sure be as upset that someone would sell a gun via shady circumstances as we are when someone is sweeping someone with a muzzle (or walking around the range with their finger in the trigger guard).
The best way to avoid a UBC is to go above and beyond on your own. I've said it before, but OSCN and other websites are free. Once you've done all you can to verify that the person you're selling to is good to go (legally speaking), then you've done all you can do. If they snap later, but have no current record... there's nothing you can do short of not selling guns to individuals (and that is only CYA - it won't prevent a perfectly healthy person from buying your old gun and then snapping later on).
I will say that if there were a mental-health database (for court-mandated treatment cases), it would be yet another tool to add to the arsenal, but the majority of mass-shootings that have occurred (not that they make up even a tiny percentage of shootings in the US) did so by someone who had issues, but didn't have anything that would necessarily have shown up in what is being proposed as a mental-health database.
http://www.oscn.net/applications/oscn/start.asp
The best way to avoid a UBC is to go above and beyond on your own. I've said it before, but OSCN and other websites are free. Once you've done all you can to verify that the person you're selling to is good to go (legally speaking), then you've done all you can do. If they snap later, but have no current record... there's nothing you can do short of not selling guns to individuals (and that is only CYA - it won't prevent a perfectly healthy person from buying your old gun and then snapping later on).
I will say that if there were a mental-health database (for court-mandated treatment cases), it would be yet another tool to add to the arsenal, but the majority of mass-shootings that have occurred (not that they make up even a tiny percentage of shootings in the US) did so by someone who had issues, but didn't have anything that would necessarily have shown up in what is being proposed as a mental-health database.
http://www.oscn.net/applications/oscn/start.asp
