Video of this needed product for the Ares EFC rifle which is now available at eHobby Asia... "ARES Electronic Firing Control System Gearbox Programmer. This Firing Control System Gearbox Programmer is design for ARES M4A1 Carbine (Electric Fire Control System Version) EFC Rifle to switch the fire mode. There are two black knobs at the top. left side plugs for Rifle and the right side plugs for battery.