Handle MKII Fixed

Edit: Accidently uploaded the broken one the first time. Corrected one actually added now.

This is a fixed up version of the Bolter MK2 Handle, fixed all the overlapping faces, deleted hidden faces and edges, doubled edges and vertices, extracted the trigger out of the object and rejoined it as a union boolean to resolve all the slicer problems with it. Rotated it into what should be the most stable print position, supports will obviously be required.