I'm sorry, but I still feel like my question isn't being answered. I'm not looking for a high level description on how the socio-political entity known as the Rebel alloance goes about acquiring equipment, ships, and the resources necessary to operate. What I'm looking for is advice on how Rebel Commando Tom gets a telescopic sight for his blaster when the Rebellion doesn't have one to give him. Please read that statement very carefully. Having the party smuggle arms through an Imperial blockade is a great idea for an adventure, but that doesn't explain to me where Tom get the credits to buy his sight. Neither does taking the wallets of fallen Stormtroopers, since that would only give them money for drinks.
Please step back and try to fill in the blanks. In a typical D&D game, the party gets money and goods by _____. In a typical Shadowrun game, the party gets money and goods by _____. In a typical Edge of the Empire game, the party gets money and goods by _____. In a typical Age of Rebellion game, the party gets money and goods by _____. I can answer the first three with at least one or two options. Without handwaving things or just saying the players have the money from no seeming source, I can't answer that last one.
The key here is that I'm looking for specific ideas that I can run with, not high level acquisition or metagame handwaving. The question is where do Tom's credits come from. I've heard great answers and a lot if ideas on how the Rebellion operates, but nothing that helps Tom buy his telescopic sight.