Just letting you guys know...
I just ordered one from Redwolf Airsoft, and the battery pack seems to now feature only a three cell holder held together by a small phillips head screw and regulated with a toggle switch to act as an emergency backup in case you let all three thousand rounds go...
Sort of annoying to switch batteries, but I guess smart.
One other minor trivial thing, when I got it, the drum was extremely oily... Sort of unusual sort of clear oil... :S