How to use same UV map for separate meshes?

I’m trying to make a weapon for Fallout New Vegas and i kinda reverse enginering how other mods are made.
So i noticed that all of the weapon parts kinda sharing the same UV map while they are seperated.

Probably a noob question but i’m new in the texturing part and i dont rly get it how to do this.

  • Enable the Texture Atlas Addon.
  • Create a new uv map from all the objects
  • Bake the textures while the objects are joined

Thanks for the quick reply :slight_smile: