I've tried knife fighter, big ballistic with back up smalls, dual uac 5's, and others. This build got me from 150 dmg and less games, to 450+. Left arm, right arm lasers and lmg's and steaks together. Good mid range and the machine gun/ steak combo to kill lights and finish of bigger bads. TC or heat sink can bee dropped for more ammo. I haven't run out as is.