Airtech Studios BEUTM Battery Extension Unit for G&G ARP9 & ARP556 AEG

Airtech Studios BEUTM Battery Extension Unit for G&G ARP9 & ARP556 AEG Polymer Construction Able to Increase the battery compartment & Protect the wiring and components Reduce a build up of heat. Suitable for G&G ARP9 & ARP556 Series Airsoft Electric Gun AEG Rifle