BCA Service Electrical Work for Trigger Group and Wiring (Per Unit)Liven up your AEG with the installation of an ETU (Electronic Trigger Unit) or MOSFET. These components can provide performance and tuning benefits such as: Reduced electrical load on gearbox components for better durability and performance Reduced or eliminated chance to encounter annoyances such as semi lock Smoother trigger feel Programmability for features like: Active Braking, Precocking, Fire Modes, etc. Our techs can perform the following