From commented config v1.91 weaponSlots = WeaponSlotPrimary + 4 * WeaponSlotItem + WeaponSlotBinocular + WeaponSlotHandGun + 4*WeaponSlotHandGunItem;
I havnt got around to the soldier class yet but it looks like this is used to define what object types unit can carry. Not really the amount. You could however get creative and use an event handler to add extra ammo when running low.