Airsoft Mechanix demonstrates the installation of a brushless motor and a T238 programmable MOSFET in a Tokyo Marui MP7. The presenter emphasizes the advantages of using a brushless motor, especially with an 11V battery. He successfully fitted the 11V battery inside the MP7, noting the tight fit.
Alex Ispas posted a video of the Airsoft Systems ASAR-15 CQB AEG which is available at Airsoft Mechanix in Romania. This has a gearbox with a detachably cylinder. This AEG allows for easier take down for quick spring change and an integrated ASCU which can detect an empty magazine It also has 4 fire modes and all standard AEG internals.