White-Hot Club

This is an oversized, bat-shaped club that maintains a temperature of 5700 degrees Fahrenheit, roughly the the temperature of white-hot Tungsten. As a result it not only glows extremely bright but is throwing off a constant haze of steam and a warped aura of super-heated air. While the handle is thermally insulated, it's recommended not to activate this thing without a spacesuit unless you want to get a hell of a tan.
Ammo: A power pack that is attached to the club via a cord running from the backpack mounting into the handle of the weapon. Careful not to catch the cord on anything.
It's hot enough to melt through MK/MCP series suits, but not instantly. It would take a bit and you'd have to be keeping it directly on the suit.