Murdock Character Mesh without Weapon

Did anyone ever manage to remove the weapon from Murdock? Idealy from the merc skin?

To be more specific… when I remove the weapon mesh in blender and reimport the model… the textures get messed up.
E.g. the legs and weapon are one material so the texture gets messed up badly when the weapon mesh is missing. I guess now i have to modify the textures, but is there a better way to do all of this?