Who said that they were "accurate".
He had his marks cornered in one room and probably mostly huddled together. They certainly weren't running very fast or far if at all. Ohhh yehhh that takes a real marksman.
And he still missed everything with half his shots. Is that your definition of accurate???
Ohh and btw:
“The semi-automatic rate is the assault rifle/semi-auto only version on rapid fire. It is the maximum rate that a weapon can fire with any degree of accuracy in semi-auto mode, usually 45-60 rpm.”
http://en.wikipedia.org/wiki/Rate_of_fire