Can tu carry a mobster gun in a trombón, trombone case?

Yeah but tu can only carry one ammo drum if your using the old fashion Thompson o one like it. In your average case there is a section for the campana which is where the drum would go then on the yamaha case there's a section for the slide. Which depending on the case tu could have a secret passage that would store más and some have a side where tu lock the slide in with the turn of a knob. It all depends on the type of case