[Cuog]

RC cars are a pain to work with as they are proprietary and rarely have access to anything other than what they are intended to do, for this all you will have is 1 motor controller for the drive and 1 servo type controller for the steering(this may be a motor controller it just depends). The RC car will allow you to control 2 motors in 2 directions and that is pretty much it. just wire your "weapon" to one of the motor outputs.