Neither gun is a man-portable and mostly used on vehicles and aircrafts. as of hand-helg Miniguns, you can not hold a 30+ lbs gun with some 400+ lbs of recoil on full rate of fire. 1000 rds of ammunition will add another 50+ lbs or more. even a 5.56mm/.223 XM234 Micro-gun cannot be referred as a hand-held and actually is used on some light helicopters, due to large ammo consumption and huge recoil a