how do I use a supergun?

I was thinking bout' getting MVS carts, I was gonna go the Phantom-1 converter but, I heard that they have a lot of graphical issues, also, they can't play bootlegs, so if I get one off Ebay or someone off these forums, I'm fucked. I need to know use a supergun.

A lot of superguns are fairly easy to use but can be confusing to put together. I would recommend buying one and then you will be well off. Its not much more difficult to use than a console is. They usually come with joystick ports, on/off switch, power supply and jamma harnass. You connect the jamma harness to the mvs board and plug the supergun to the electrical socket and your ready to go. They really aren"t difficult and are good for any jamma boards if you want to expand to collecting other arcade games as well. Check this sight out.

<a href="http://www.uberia.co.uk/" target="_blank">http://www.uberia.co.uk/</a>

I know next to nothin when it comes to the arcade shit. So, but what else do it need to make the supergun work?