Weapon modelling tutorials?

Thanks for the links. these however about how to model, and just happen to be about modeling guns. I am looking for something a little more specific. how to model guns for unreal, get it modeled, imported into UE4 and firing. Its the little things that will matter, such as naming conventions for stuff, where to place bones, etc that a person needs to go do to get the weapon working in UE4.

While the pistol tutorial won’t help me in anyway, it does look fun to do just for kicks, but it would cost me $400 to watch it. Seems a bit steep.