BATTLEAXE 1400rd Electric Drum Magazine For MP5 Series AEG Rifles Airsoft BlackBATTLEAXE 1400rd Electric Drum Magazine For MP5 Series AEG Rifles Airsoft Made out of ABS polymer 1400rd Capacity Drum Magazine. Solid and Rigid Construction. Electric auto winding, no need to wind up the magazine manually each time. Press the button at the front of the magazine to wind up. Open the reservoir cap and pour BBs into the magazine. Comes with battery box, connect the wire at the back of the magazine. Continuous 1400rd of capacity is