what type of stock does it have? ... I belive that G&G has a "crane" stock .. which is sort of triangular if you lock at it from the back. there is space in the buffer tube, and also in the 2 "tubes" in the stock itself running along side the buffer.
if you get a Crane or butterfly battery pack it will be sectioned and wired to fit cells into all 3 spaces.
and that would be 2/3 mini cells easily ... although with some work.. 4/5 cells MIGHT fit too ..
Vancouver Island Gun Doc, custom builder.
Leader - M.E.R.C. multi enviroment recon CAVALRY
The Cavalry Comes
"SIR!, you've gone mad with power!"
"Ofcourse I have, you ever gone mad without power, it's useless, no one pays any attention"