I have downloaded a few different weapons to be used for Singleplayer, even made a temporary Multiplayer server, and I can't figure out how to get guns to be buyable from the in game store. I can have the gun's as start off mutators, just as the G17 and Jackal and 454 mod, I even have the Doom 3 creature mod working, but as for the Mosin Nagant mod, QBZ mod, and other guns mods along the majority vehicle mod maps, I can't seem to figure out how to work it. Any help here?

Edit: I have figured out some stuff, but at the same time some weapons won't have a mutator to add them into the store, I downloaded them off the workshop so I don't know why they won't work. Also how do I get the Server perk mod and have it to where I can make my own mods, and why is there only one vehicle mod map showing in the "Vehicle Game Type" gamemode?