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			I don't watch movies, but I did see something like that on TV while I was trying to find something more intellectual to watch.   
 
It's fake. 
 
Real General Electric Mini-guns fire the .308 cartridge (actually the 7.62 NATO).  The guns weigh almost 200 pounds and are electrically operated.   
 
Movie version?  I didn't see any power cables and it looked like it weighed twenty pounds or so.   
 
There's also the tiny little details of ammo feed and recoil.  If it fires 6,000 rounds a minute, a five-second burst burns 500 cartridges.  You see your hero hefting that many?  How about the feed belts? 
 
Oh, and recoil.  One 308 from the hip - no sweat.  500?  Yeah, right.   
 
BTW, yup, I HAVE fired one for real.  It was mounted in a helo door.  Cambodia, 1971.  Ruined the day of a gomer with an SKS - big time.
		 
		
		
		
		
		
		
			
		
		
		
		
		
	
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