Lets see, a tall thin silhouette moving fast and changing directions randomly while shooting at you or a bundled up body rolling in a straight line and whose gun is temporarily out of commission. A semi skilled shooter with good reflexes with pop that rolling bundle 3 or 4 times and it won't matter where the bullets hit, ankle, shoulder, middle of the back, in the side perforating a kidney the roller will become disabled. Any fool willing to use it as a combat maneuver has been watching way to many Kung Fu movies.