Cyma g18c aep with three 90 round mags, two 350mah batteries ,stock 25 round mag and three spare xt30 plugs for the gun. Resoldered wires to delete stock battery. Works but doesn't feed correctly with any of the mags. I know it's something dumb I can't figure out. My ignorance is your gain. I know what I have though and it probably an easy fix. No lowballs please. I will swap but not for crap.