ICS M3 Grease Gun AEG.  This is the classic WW2 USA SMG, all metal and a beast! Retractable stock.

Battery and charger not included.  Recommend short 7.4 stick type batteries.

Internally these guns use standard 8mm bushings, pistons, gears, cylinders, cylinder heads, tappet plates, short type motors, and a 20.8mm nozzle.

FPS 380-400+ w/.20g BBs