Missing laser rifle model

[DiegoJP73]

My laser rifle is missing the model for when it is on the ground or when someone else is holding it, i see the big red square with the exclamation mark, and i only get it when i go into the npc's inventory, when i have it on first and third person it looks fine but its missing when somebody else has it, so far i've only encontered that this weapon is the only one with a missing model, hep please