That's the only one that's even remotely man-portable.
Here is the one I was talking about: http://en.wikipedia.org/wiki/Minigun
That would be fun to play with, wouldn't it? A bit pricey in today's ammo market, though. Let's see, if you were able to get a bunch of 7.62x51 at really good price, you could burn through a 5,000 round belt in just under a minute, using up $2500 worth of ammo.
Lol.. nice to dream ;^)
Like I said, one full auto I would love to shoot ;)
At least me firing the 50Cal (full auto, but instructed to try to keep 3 round bursts.. and having 3 interchangeable barrels next to us WITH an ‘oven mitt’).. Was an adrenaline rush experience, but, thank God I never had to mount one in battle.. I was stuck with AR15.. which, me being E13 (artillery advisor) on the battlefield, was no problem.