It looks like even the G&G FN F2000 AEG has been updated with the ETU and MOSFET just like the other AEG offerings G&G Armament. Reapers Airsoft goes over this AEG to find out if the update has brought about improvements... "Hi folks, as requested by you, we look at the G&G FN Herstal F2000 as S-AEG in this video. This airsoft was provided by the airsoft store in the Hunter version with ETU / Mosfet. UPDATE: The Gearbox can also be removed from the rear of the housing!"