G&p HAILSTORM dual MAGAZINE for m4 electric gun (black)

New abs/metal magazine with internal 700rd storage
inner electronic board circuit with 9V battery
micro and minimal board with less wiring as possible 
remote switch wire with activation button
sealed see trough easy checking motor case
double bb port for easy recharging
need 9V battery to work (not included)

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