I dont know if this is a bug or you guys made it like that but for example if you have 2 or more of the same kind of weapons like ak-74 and aks-74U it shows the original gta sa skin that happens with all the primary weapons the secondary weapons work fine
It's not a bug per sé, it's because of the how the script loads the weapon skins. Since they're all clientsided, and only change when you have a particular weapon equipped, the bug you described above happens.
I dont know if this is a bug or you guys made it like that but for example if you have 2 or more of the same kind of weapons like ak-74 and aks-74U it shows the original gta sa skin that happens with all the primary weapons the secondary weapons work fine
even when you equip them its the same skin