Alas, you'll probably get nothing other than the character physically reacting to the bullet 

.  It all depends upon how they split up the body region areas (the bounding boxes that are actually used for the hit detection).  So for example, there's an upper and a lower arm region you can hit.  Well, if a guy has his sleeve pulled up a bit on the skin, but that's enclosed around the lower arm region, then you'll get a dust hit anywhere in that region.  This method is used for it's speed due to the high-poly characters that we have.  You could normally do a per-poly detection method, but to sort through several thousand would be a CPU hog whenever someone got hit.
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Latuh fuh U,
Benson
benson@2015.com
"We don't introduce or cause bugs in the game, we merely find and bring to light the inadequacies within the code."
-regarding level designers