MAC-10

SAS:Zombie assault 3
Arguably the best weapon in the game, the MAC 10 has decent damage, is very light, has unlimited ammo, has a good clip size, as well as a relatively quick reload. The MAC-10, however, is occasionally a letdown in the eyes of some players, due to not being as powerful as an LMG, nor does it have the massive clip size of one, though it has infinite ammo, a much faster reload and is much lighter than an LMG. It is the best(and one of the last) weapon unlocked.