Looking to trade my fully build a&k m249 Here is all what’s done 6.03 363mm prometheus inner , mad bull HopUp and pistol locking hinge ,2protek 3s 30c 2600mah lipos elcan sight, 16:1 vfc gearset ,20k raptor motor 20amp micro switch, steel hand guard system, Max cylinder system piston head,adjust air nozzle matrix piston body, 6mm bushings battery relocation to the stock