[ModelBreaker]

Somehow, I doubt the people who are moving weapons from China, Bulgaria, etc. (buyers, sellers, and middlemen) are that concerned about filing the right paperwork with the U.N.

The only people this will hurt are the Western gun manufacturers because those are the only countries that will adhere to standards. Of course, that is the intent.

[RicocheT]

Red China, N. Korea and the Russian Mafyia will sell arms to anyone with hard cash, gold, diamonds or oil in storage.

Those bad boys won't follow any rule the UN or other agency proposes. The marking and tracking system will only hurt US manufacturers and US legal gun-owners (eventual confiscation).