[help] how to install a weapon mod

Hello all.

I search for some topics, but don’t find something talking about it.
There’s a way to install a weapon mod to my fivem that only I can see the change? I mean, I don’t have a server, but I like to change the
combat pistol to a Glock, for example, in GTA V archives just to change the model in any server I join in fivem. Is this possible?

Moved to #development:scripts