If you think the SOPMOD Battery of the Tokyo Marui new generation AEGs is limiting, Gunsmith Baton does you a service with this adaptor allowing you to use any battry to power either the Marui SOPMOD or HK416D with different types of batteries as long as the fit in the stock. You can get one right now at Airsoft World where they're selling it for £34.95 and the video below shows a review of the adaptor done by GingaNingaJP.
