Here are some pics of a 4WD Paintball Gun UGV I built. It's got a Spyder Imagine electronic gun with 14 inch commando barrel and a fake suppressor on an E maxx Chassis. I can fire the weapon as I am driving the E maxx at up to 35 MPH. At this point it doesn't have elevation or the ability to pan. But it is very fun- especially when you can stay out of sight and send in this menacing beast.