No, he's right on the Velleman clips, it's four of them back to back, and the silver parts are the batteries. You can see theres two seperate black/red cable pairs running down the handle.
It isn't four,
Notice that this is only the width of ONE AA
If it is four single ones, how come the 9v connector on the bottom?
Could the 'blue' one be different than the 'red' one?
First part to arrive are the key switches. I followed the third link on the discussion of where to buy them. Very pleased with the key shape and design!