User blog comment:Drkdragonz66/Call of Duty ELITE will stop boosters/@comment-1913529-20110824143656/@comment-3121225-20110826162250

As TheEpicShot said. Shotgun, or SMG, easy counter to QS. I find the rage people have against a tactic, in a video game to be completely hilarious. If you can't fight back, then it's your fault, not theirs.