It really isnt the problem people seem to think it is, its so easily countered with the TTK on most weapons. I generally dont use it as it gets me killed much more than I get kills with it and I'm pretty good with it. The only exception to this is Inferno where its straight up god tier OP when there is no radar. I went 27 for 7 in inferno the other day and barely shot a gun. This is one game type though and it doesnt even give you good loot unlike IB or ToO where loot and winning actually matters.