Polarstar Fire Control Unit (REV 3.0+)

The Fire Control Unit (FCU), Rev. 3, Universal is a high-performance electronic control system designed for use with PolarStar HPA (High Pressure Air) engines. It acts as the “brain” of the system, allowing precise control over firing modes, dwell, rate of fire, and other key performance settings.

Featuring an integrated LCD screen and joystick interface, the Rev. 3 FCU makes it easy to navigate menus and fine-tune your setup for maximum consistency and efficiency. It is universally compatible with PolarStar HPA systems, including both single and dual solenoid engines such as the JACK, F1, F2, and Fusion Engine platforms.

The Rev. 3 version includes improved voltage regulation for better energy efficiency and a more compact design, allowing it to fit into tight builds such as M4 buffer tubes with suitable LiPo batteries. It also includes an integrated Motor Control Unit (MCU), enabling support for box magazine systems through the dedicated port.

Key Features:
• Universal compatibility with PolarStar HPA engines
• LCD screen with joystick for easy configuration
• Fine-tune dwell, rate of fire, and firing modes
• Improved voltage regulation for efficiency and stability
• Compact design suitable for tight builds
• Integrated Motor Control Unit (MCU) support
• Compatible with single and dual solenoid systems
• Ideal for custom HPA builds and performance tuning