SpudFiles

If your set on a minigun, this might be a slightly better idea. http://www.air-sharp.com/616.html
Course, you'd want to make it as a vortex or cloud, to match the fire rate of a real minigun, an AEG wouldn't go fast enough, and wouldn't be as fun to make.

Yes that is a cool idea i may make a vortex like that but what i think he wants is for each barrel to fire but according to those the barrels spin but a hidden barrel in the middle of each barrel is the only one that fires.