Is there a simple way to edit bone transform of skeletal mesh inside of ue4?

I know you can modify bone transform inside the animation graph but that’s not what I’m looking for. Basically, I purchased some weapon assets from the marketplace. Some of them have this issue where parts of the skeleton aren’t at the same transform as the rest of the mesh. For example, I have a pistol skeletal mesh, and within the bones is an empty clip, positioned way behind the weapon on the x axis, which is no good. I’m not really sure if this is a bug or if this serves a purpose either, but currently if my character draws a pistol, a clip floats behind him. So I suppose that brings me to 2 questions - A) Does the layout of this skeletal mesh sound like it serves a purpose that I’m just not getting? B) Is there a way to edit the transform of that bone inside of ue4 or do I have to go the blender rout? Thanks in advance