A year or two ago I bought up a Terminator 2 control panel that came with a set of positional guns. They aren't the official "movie accurate" guns, as they are a set of Uzis made by Taito, but they work exactly the same way, and have pretty much the same mounting footprint. My problem is, that when I bought the guns, there was no enclosure box around the guns' mechanics. See the pic below for what I'm talking about:

The boxes below the guns are for hiding and protecting all of the mechanics that the gun is connected to. With my guns, everything is open and exposed. I need to somehow make a set of enclosures that will be durable, and look arcade accurate. Unfortunately, I don't have a clue when it comes to machining metal, and I have no connections with anyone who does. Also, even if it was as simple as giving a guy at a machine shop some specs and getting the enclosures a week later, I can only imagine it would cost me an ungodly amount of money.
I really want my positional guns to have good enclosures, but I really just don't know what approach I should take with it all. I know that the ideal would be powder-coated metal, but I don't know where I'd go for that or what the cost would be, and I'm not sure what alternatives would be viable. Any suggestions would be appreciated.