So my feeling is that there's a huge demand for all this stuff from military and civilian sources. Soviet sources are not yet in play as much as the Soviets and Warsaw Pact are focusing on securing Boston and certain vital coastal bases for supply purposes.

Preppers/survivalists and so forth probably bought up a lot of the civilian stock to sell/trade. But this guerrilla unit has Joe, who hooked them up with an illicit supply of pharmaceuticals, which means that they -do- have something worth bartering to other guerrilla units to make sure they are well supplied.

So they probably have an abundance of supply due to the fact that that guns and accessories are way easier to get than quality pharmaceuticals. My reckoning is that this particular cell is front of the line for picking up gear and being able to pay for it. Smart hoarders are going to know that they need the drugs and aren't going to be as savvy about establishing that supply line, and criminal elements already are dug in on it.

tl;dr: It means that thanks to shady dealings with Joe, the unit has access to the most valuable currency on the black market right now. So the unit probably has some M4's and maybe some other stuff.