PolarStar HPA Airsoft FCU (Fire Control Unit)- Rev. 3

The REV3 FCU represents the pinnacle of fire control technology, combining classic design with modern innovation. Its intuitive LCD screen and joystick interface let you navigate menus and fine-tune settings with precision, giving you complete command over your HPA system. Built with upgraded voltage regulators, this unit delivers superior energy efficiency while maintaining a compact 2.25" x 0.9" footprint—small enough to fit inside an M4's buffer tube alongside a 300mAh Lipo pack.

Universal compatibility with all PolarStar HPA systems means seamless integration with both dual and single-solenoid setups. The integrated Motor Control Unit (MCU) adds versatility, enabling box magazine operation directly through the MCU port. Whether you're seeking reliability, control, or performance, the REV3 FCU stands as the finest fire control solution on the market.