doesn't matter if the robot is pulling the trigger - just like modern automatic gears are actually manual ones where a "robot" is the shifting.
streams of bullets are no longer necessary as accuracy goes up. why waste ammo on suppressive fire if you can simply headshot with high precision? spotting targets through visible and invisible spectrum plus audio? using large caliber rounds that penetrate brick walls, car doors, etc (7.62, 50cal, etc.). basically mount 2 barretts on a turret and wreak havoc.