Broken right hinge on 3ds xl

Hi,

I've been trying to fix my 3ds xl's right hinge, as I found it in a very sorry state. (I don't have the original or any other hinge or barrel) After some repair, I bought a new housing for it, but there's a piece that is missing from this housing that I believe is the barrel for the right hinge, which wasn't with mine. Is there any way I could not have it, or any place I could find one?

(Ps there's also a bit that fell out of somewhere when I was repairing it and I don't know what it is, any help would be appreciated)

Thanks!