4UAD Smart Airsoft's latest ASMR sessions covers the Arcturus AK-12 With Jefftron ETU & ADV brushless motor. The AK12 is taken apart to remove the gearbox. and gets fitted with the Jefftron ETU and follow the Jefftron Sticker Tips. Next, a test of the sensors and shim the gears before installing the piston and closing the box followed by the installation of the ADV Brushless Motor and pair the selector. From there, it's the assembly of the rail and barrel before conducting a final test and mag dump.

4UAD Smart Airsoft are on a streak with their ASMR series with this episode about an ICS Airsoftt M4 that has ADV Brushless motor/ECU. This is an almost an hour video showing the swapping of internal parts and accessorising it as well as test of the resulting upgrade by doing a mag dump.