That's something I forgot to mention. My Red-dot isn't as intense as yours, the glass is very reflective though, but I can't see my self on it. Even in complete darkness the red-dot isn't too bright; the second level is really strong, almost blinding xD.
I only held a TM P90 once, and it felt too light for my taste. CA is almost as heavy as the real thing (about 2,8kg with a battery and mag full of bbs), and balance is ok IMO.
Also, the batteries compartment doesn't open up on it's own. As matter of fact, is a PITA to close it and quite hard to open it too.
PS: