How does a gunslinger go about getting a second gun at lower levels? Can he/she buy another "broken" gun for 4d10? Say someone sold it on the market? Got a PC looking to dual wield guns, and the ones in the book are rather expensive at 3rd level. She wants to multiclass mysterious stranger gunslinger/two weapon fighter.
If your character had Craft(gunsmithing) and your dm allowed you should be able to make one with enough time. I could be mistaken but the gunsmithing feat lets you craft, repair, and modify guns.