This product, by Suncom, converts your old hand controller in a joystick.

Simply slide you old controller into the front of the Mother Ship and you have yourself a joystick. This joystick came with no wires or circuitry since it uses the standard nes controller. This made it cheaper for the average kid to buy with his allowance. The Mother Ship has no major setbacks and operates just like a regular joystick.

Overall it's a great thing to have but I would personally buy myself a regular joystick with autofire.

Thanks to Pat Mc. for scans and information