G&P M4A1 Extended Battery CRANE Buttstock with 10.8v Battery (Black)

Conpact Crane stock holds an internal high power battery to power your upgrades! -Included 10.8v 2200mAh Ni-MH Battery -For Marui M4A1Series / M16A2 -Battery Holster to prevent short circuit -T-Shape Connector Wire for recharge -T-Shape Connector Set