I had an issue with my 3D model; I designed most of the frame around a misaligned generator... So I tore it down and rebuilt! Better than it was, I give you Mk 5.

Other notable change is the option to not have a back end/shoulder stock at all. I have also been working on making the frame so it is assembled separate from the side panels of the barrel to give me access to the interior for monkeying around with wires and other electronic components