Airtech Studios Battery Extension Unit for G&G CM16 PDW15 & PDW15 CQB

Airtech Studios BEUTM Battery Extension Unit for ARES Amoeba AM-013 / AM-014 / AM-015 AEG Polymer Construction Able to Increase the battery compartment Suitable for G&G CM16 PDW 15 / CM15 PDW 15 CQB Series Airsoft Electric Gun AEG Rifle