G&G ETU 2.0 and MOSFET 3.0 Wiring Set for Version 3 AEG Gearboxes
(Version: Rear Wired)

"I rate the this product as 7/10

I bought this for my APS UAR airsoft gun.

The trigger assembly did not fit into my V3 gear box that came with the UAR. I had to file and sand down the plastic assembly to make it fit and allow me to close the gear box shell.

The cut-off lever provided with the ETU had to be filed in order for the MOSFET to work properly. Otherwise, switch #2 on the PCB will be held down and it will only shoot a handful of times and then completely stop. I think the MOSFET has something built in that requires the cut-off to work properly.

The PCB in the trigger assembly has a very fragile connector port. The port had come off at the solder joints. Fortunately, I was able to solder the port back onto the PCB.

The selector plate provided also needed to be filed so that the cut-off lever would not hold down switch #2 on the PCB.

The UAR gearbox housing was not designed for the trigger provided with ETU. I had to file trigger so that the trigger was not held down. Not the fault of the ETU but something to note if button for yourself. The cut-off lever was touching the inside the gearbox housing. I used my rotary tool to sand off material until the cut-off lever was no longer pressed on the inside wall of the housing.

The ETU comes with a 25A APM/ATM fuse. I had blown the fuse with a Tenergy 11.1V 1000mAH Lipo battery. Unfortunately, the ETU does not come with a manual or a spec rating on the what type of battery it can handle. I ended up buying a 10 pack of 25A fuses from my local auto parts store. For fear or frying the MOSFET, I stuck with using 7.4V 1000mAH Lipo battery.

After all this work, I loving this ETU and MOSFET. I'm finally rid of the really, really, long trigger pull. The ETU also solve the issue of my gun jamming when I shoot too fast in semi-auto. Hopefully, this MOSFET and trigger can last a very long time.