On Thursday, January 7, 2016 at 11:41:20 AM UTC-5, Mr. Luddite wrote:

Or, will John's guns end up in the millions of readily
available guns with no record of where they came from?

Until (if) that gun is used to commit a crime, why does it matter? And when (if) it is used to commit a crime, then the person using it is the one that deserves punishment.

If all it's ever used for is to shoot paper targets and squirrels, it's none of their business.