The Kaiju shows the Valken ASL+ Kilo.45 AEG that was on display at the SHOT Show 2020... "The Valken ASL+ Series Kilo.45 AEG adds several new features to our normal ASL Series rifles. Valken has upgraded the internal components to provide less stress on the gearbox, including a 22:1 ration gear set, piston with full metal teeth, and radial cuts in the gearbox shell. The ASL+ series also comes with a rotary style hop-up unit with locking increment settings.