firestorm high-rate-of-fire gun on irobot , page-2

The single barrel version is far better balanced than the four barrel version they show on the cover of the 2009 annual report, the centre of gravity is way too high on that model in my opinion, does it have to mount that high ? what is under the barrel section of the gymbal? is it servo motors? why couldn't that section be on top and the barrels below, or perhaps the servo's either side of the barrel config, to bring the centre of gravity closer to the ground? because the way the four barrel unit is configured now, it has to be inaccurate on multiple shots, the higher the barrels are the less accurate it will be, especially at a high fire rate, and you can see that on video footage, the whole platform rocks when fired at a high rate of fire.