so, i decided to try LiPo. Got 2 fusion-packs from Action Hobby. 2 cell 7.4V 800MaH 25c discharge. not a bad little pack so far. i stuffed one down the buffer tube and got rid of the mod stock. i like the slimmer stock better. I still, and will most always, have the railmag on the left, sometimes with the flashlight on the right. quite different from a year ago when i got the weapon.