Weapons with no ammo after death/spawning

Sometimes when players spawn in (citizen) with weapons, they have ammo but other times they don’t. For instance, our custom classes already have guns so when they first spawn in with their job, their guns have ammo but when they die they lose their ammo.

Sometimes it happens with the gun dealers shipments as well. When I tried to purchase a shipment, I picked up the gun and it didn’t have any ammo. We tried to find out how to solve the problem but haven’t got an answer. Any suggestions of what to add/change?