Airsoft Mechanic GR features a VFC HK416 Brushless Motor Build, demonstrating its high performance. This custom build retains the VFC stock shell and spring guide, while incorporating Full FPS Compression, Jvan solid bushings, and 13:1 gears (ss-4). Powering this setup is a Jefftron Leviathan control unit paired with a Solink 31k brushless motor, allowing the rifle to achieve 1.5 joules of energy and an impressive 37 rounds per second.