WYSHTECH Airsoft shows you how to adjust your KWA 2.5+ or VM4 gearbox so that it can work with a Jefftron Leviathan. The Leviathan - V2 optical is a high-tech ETU (electronic trigger unit) that enhances your shooting experience. It uses both optical and switch sensors to detect the trigger position and control the gearbox, making it more responsive and durable than traditional ETUs.

Reapers Airsoft combs through the Jefftron Leviathan V2 Optical MOSFET with Real Feel Speed Trigger (RFST) in this video review... "Hi! Hi! In this video we install the Jefftron Leviathan V2 Optical with Real Feel Speed ​​Trigger and take a look at the app in detail. The EFCS is installed in my Burk BR10 AEG."

Reapers Airsoft does a review of the ASG CZ Scorpion EVO3 A1 S-AEG that comes with the Jefftron Leviathan EFCS. The S-AEG means it is a semi-auto AEG to meet airsoft regulations in Germany.. "Hi folks, today we're going to take a look at the slightly older CZ Scorpion EVO 3 A1 in the S-AEG version from ASG."

Robin Bensten shows you how to install the Jefftron Leviathan Smart MOSEFT on the ICS CXP-MARS AEG... "In this instructional video, i am opening up the ICS CXP M.A.R.S rifle to change out the stock mosfet with the LEVIATHAN smart mosfet by Jefftron. Of course this will transfer to other rifles as well, but this how to was created to guide thos with the ICS split gearbox. Hopefully this will shed some light on the mather."

Another comprehensive review by Reapers Airsoft, this time covering the Leviathan EFCS MOSFET from Jefftron rather than an airsoft gun... "Hi, Today we look at the Jefftron Leviathan EFCS which is adjustable via Bluetooth. Thanks to the slim design, it fits into most gearbox shells without post-processing and makes a very good impression in terms of quality. * UPDATE * - Maximum Amps: 40A for 20 sec. 120A for 1 sec. Unfortunately, I did not have this data at the time of the video yet."