The problem with a super-high-speed setup is that often the mags can't keep up. I have an MC51 outfitted with Systema bearing bushings, Systema High Speed Gears, and an EG1000...all pushed by a 9.6 volt 2400Mah NiCad pack. It can't use hicaps, because they misfeed, but the rate of fire is easily the same as a FAMAS, probably closer to an M11A1. Hit the trigger and watch a solid stream of plastic death zip towards your opponent