G&G ETU and Mosfet for V2 gearbox (Rear Wired). This is the same unit that most of the new G&G guns have on default. It features programmable Semi/Full Auto or Semi/3rd burst modes. Addition to this there is also shot sensor to detect complete gear cycle, which means your gun won't jam anymore. This unit also has a low battery cut-off which prevents the guns electronics to be burned with low batteries.
This package contains everything you need, including an V2 drop-in electronic trigger and it is compatible with most of the Ver. 2 gear boxes out there.
NOTE: How ever, we recommend an expert installation for this product!