Ive seen people load custom prefabs and other things, so whats stopping me from making a custom gun?

My idea would be (if I can't somehow get a custom model): take a gun, the LR per se, and  rename it. Then track the gun from when it spawns to who has it and so on. Listen for a OnPlayerAttack or some kind of event, then intercept the HitInfo and modify the damage. Can this be done? If so can you give me a quick rundown how?

You can modify can customize item stats, skins, and potentially names.

I would like some info on this as well. What would be the process of modifying an item's stats? Is it possible to say.. make a Dive Tank last longer than default? If so, could I get a point in the right direction?

Anyways we can't change Prefab and animations. Only things here - damage, (maybe recoil), and defauilt item stats like condition

If we have access to the unity functions. why can't we change the model and animation?

Because its not the game maker. All models and ETC is working on clientside, you can't work with them