Sure, just replace their current secondary weapon with them. Ammo shouldn't be a thing in games. Look at Mercedes and Mechanic's secondary weapons.
mercedes and mechanic make sense cause shes an elf with magical or enchanted items and mech's robot holds the ammunition which implies the bullet secondary, instead the other classes are "human" so they have to hold the ammo in the inventory
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mercedes and mechanic make sense cause shes an elf with magical or enchanted items and mech's robot holds the ammunition which implies the bullet secondary, instead the other classes are "human" so they have to hold the ammo in the inventory