They're going to have to repeal the Hughes Amendment to the 1986 FOPA and open up the registry again. That means all of the NFA weapons made since 1986 will be back on the market, dropping the prices drastically. Screw the M4/M16, I want something belt-fed.
It depends on how it goes to shit. Internet goes down? Mass arrests of politicians? State-wide power outages? Cash will be best converted into tangible assets under most circumstances, our money backed by the full faith of the US government and we know what that is worth.
Here's a few others
https://www.webcamtaxi.com/en/usa/washington-dc/united-states-capitol.html
Here's one of the Capitol Bldg
https://www.webcamtaxi.com/en/usa/washington-dc/united-states-capitol.html
Waco rules of engagement in Iowa, this is not the way.