I tried this:Native models are never actually in mod folders. They are just imported from the main game to the mods.(click to show/hide)
"nomad_bow_h1" is the bow model and "nomad_bow_scabbard_h1" is the scabbard model (genius). I replaced them with "nomad_bow" and "nomad_bow_case" and it became an invisible bow. I think there is no native model anymore, in crpg.