Ok so I need a gun which has a high rof and strong internals/externals full metal would be nice but I can deal with plastic. it needs to be able to run off m16 style mags and under $320. Also must either be small or with a foldable stock and have rails. Oh ya pls no gas guns. I was looking at the new ics g33 but I have never hgfd an ics so I do not know if their gearboxes can handle a 7.4 out of the box.