How to resize CapsuleComponent to a custom shape?

I’m trying to resize the CapsuleComponent of my game so that it covers the arms and weapon entirely but at the same time I don’t want to simply change the radius as it will make it impossible to walk through doors and narrow passages (which the pawn can do under normal circumstances). How may I do it? When I try to simply change the scale, it scales along with the camera that is its child (and I can’t unparent it). Any help?