Alpine Airsoft Assault review G&G GC16 Predator AEG that was provided on loan by Walker Wargame. This AEG has a 12-inch KeyMod rail system with the frontend reminding you of the LVOA handguard. The AEG has the the programmable ETU and a MOSFET, allowing protection of the electronic components as well as configure the fire modes from full auto to 3-round burst.