Okay this one is a bit awkward... another batshit design.
I call it a "Mini-Machine-Gun" because while being designed to be hard-mounted, it fire a smaller than usual rifle calibre from pivot-action magazine instead of a standard belt.
I get the feeling theres a smidge too much going on with this design however...it just looks...unorganized to me...but maybe some of you guys might find it to look pretty cool.