4200 rds/min = 70 rds/sec.

None. The weapon Arnold Schwarzenegger carried in Terminator 2 was the GAU-2 Minigun, which is too aggressive of a weapon to be fired while held in the hands--they don't have handgrips when you get them. The GAU-8 Avenger cannon weighs over 600 pounds--the weight of four average size Danish Rangers--with no ammunition. You can't even lift the thing, much less fire it.

it is the 30mm gau-8 avenger.the 30mm avenger has a bullet that is the length of 11 inches.the 30mm avenger is also on a a-10 thunderbolt although the new 30mm avenger can fit a missle because the barrel is so wide and can fire 500 rounds in 3.5 seconds

The A-10 Thunderbolt carries 1,174 rounds of linked 30x173mm ammunition for its primary weapon, the GAU-8/A Avenger rotary cannon.

Depends on which round you are asking about. The Armor Piercing Incendiary PGU-14/B has a projectile weight of about 14.0 oz (395 grams or 6,096 grains) and High Explosive Incendiary PGU-13/B has a projectile weight of about 13.3 oz (378 grams or 5,833 grains).