Firing the minigun while holding it would not be impossible. I'm going to talk about physics for a while here, and this is an abstract part of it. When the minigun fires, the barrel is rotating. This barrel has its own rotational velocity (omega).
Now, when the bullets start firing out of the barrels it exerts a torque on the gun, wich tries to apply another rotational force on the minigun giving it a resultant rotational velocity. This would be a sideways rotation from a bird's eye view. With this in mind, it would be more than possible to fire a personal minigun.
here is the force from the firing of the bullets.
(side view)
___ |
| |======|======<--- (Force due to bullets)
| |------+----- (center o gravity (+))
|___|======|====== (barrel)
|
Now, it is NOT being applied to the center of gravity, it is slightly higher, producing a torque.
Since the barrel is already spinning:
(front view)
<--
o o
o + o (its damn hard to draw this using text)
o o
-->
You end up with a third, resultant rotational force.
(Top view)
-->
| |
| |
|+|
| |
| |
|_|_|
<---
This force would be easily counteracted by someone with a front and rear handle.
If you still disagree with me I could very well draw you a better picture and possibly refer some sources of which would prove this.
