G&p ATTACK MAGAZINE II for m4 electric gun (black)

New shaped abs/metal magazine with internal 1700rd storage
inner electronic board circuit with 9V battery 
remote switch wire with activation button
see trough easy checking motor case
assembly wheel for easy recharging
fast charg upper flap
need 9V battery to work (not included)

for Marui,G&G, G&P, Dytac; ka and compatible electric m4 rifles