On Mon, 03 Nov 2014 19:57:01 -0500, "Mr. Luddite"
wrote:

The registration document required on dealer purchases can trace the
serial number of the firearm from the manufacturer to the dealer and
then to the original purchaser. That record of custody becomes broken
when you do a private transfer.

===

Exactly what problem or crime do you expect to solve with this
unbroken chain of custody? I don't hear law enforcement agencies
clamoring that they really need this. In mot crimes that I hear
about, the original owner of the gun does not seem to be an important
question.