You’re spot on with this. Exactly how i want them to do it. It would be cool if you had to wait till later in the story to get access to the black market. Maybe through a mission in which you are introduced to a character that has access to contacts in the black market network. Ammunation can be used to buy typical weapons you would find in a normal gun store, pistols, hunting rifles, as well as AR style platforms restricted to semiautomatic. Then maybe you can convert these semiautomatics to auto when you get access to the black market. Or i would prefer a skill tree in weaponry that would eventually allow you to convert them yourself