An unboxing by Pheas Airsoft of the Double Eagle M904E AEG which he says is his budget AEG favourite. M904 is a low-cost AEG replica series by Double Eagle. They are light and handy because they use reinforced nylon instead of metal and have many features for easy handling. They have a Gearbox v2 mechanism with a quick spring change system, a rotary hopup and a Falcon electronic control system with programmable fire mode, trigger sensitivity adjustment and motor and battery protection.