· Electronic Trigger respuesto for G & G L85 ETU · Programmable: Semi / Auto or Semi / Burst 3 · Cut Low · Sensor battery trigger to detect cycle complete · Compatible gears with G & G L85 with electronic trigger serieNOTA: This product it can be installed on older versions of G & G L85 series without electronic trigger. For these older versions you need to install the complete gearbox G & G L85 ETU Upgraded GearBox Set (sold separately)