Honestly and i said it once and her i am again the AUG. a lower FPS and length so your good in the thick crap however the bullpup gives you an M16 length barrel meaning you get accuracye as well. For example.
Sunday at our game i borrowed Boston my DMs M16 and ran up to the front much like you described. But i kept having the barrel get stuck on and in the stuff and was to long however the length definitley helped when i was in battle. Also if your interested in ROF reenforce and then add a custom 9.6 that should up it a bit.
For movement its short and has a forgrip
for battle its got a long barrel and a lower FPS when your close.