If you want a black market gun here, go to the back door of the police station with a few vials of crack or meth. The guns taken off the street during arrests or buy back programs are "back doored" for drugs or cash. Lots of handguns with case file numbers end up back on the streets.
The state of KY auctions off seized guns to licensed dealers.
If you live near a base, you can already buy just about any small arm or munitions you desire, including light crew served belt fed machine guns. More than once I found a machine gun nest in the woods, lots of marijuana farms on Dept of Natural Resources lands in western WA. And the firearms used to protect the crops were stolen from Ft Lewis, by black, Mexican or Asian gang affiliated soldiers and either sold cheap at local pawn shops or bartered in the "happy endings" massages parlors for a knob job...

I've hauled loads of alcohol and ammo that were imported from Europe. Very easy to tell what is in them if you know how to read trailer seals. Same for domestic origin loads. It isn't hard to spot an ATF seal, chunk of lead around a cable that is wrapped around at least 2 door rods... and it says BATFE in the lead...
Military munitions loads are escorted. I've hauled several of them, and when 3 of our trucks had to park off base for the night before delivering in the morning, our rigs were surrounded at all times by armed service personnel.
Every port, railyard and airfield has at least one employee per shift who is calling hijackers with the trailer/container numbers for high dollar loads.
With all this happening around your hood - have you complained ? What happened, and sometimes you have to do it 1000's of times.
Cool.