Perun for M14 by Tokyo Marui/CYMA SEMI-ONLY [PERUN]

The MOSFET Perun for M14 by Tokyo Marui/CYMA Semi Only by Perun is a drop-in electronic unit designed for M14 replicas in the Tokyo Marui/CYMA standard. The design replaces the standard trigger block and uses magnetic trigger detection, optical detection of the fire selector and sector gear, and an adjustable Clicker, supporting faster trigger response and precise tuning of the replica for semi-auto fire.

Construction and design

The Perun for M14 by Tokyo Marui/CYMA Semi Only replaces the factory trigger block with Perun's own housing integrated with electronics. This design combines the function of a MOSFET unit with a mechanical trigger feel.

The system uses magnetic trigger detection and optical detection of the fire selector and sector gear. This combination reduces dependence on classic mechanical contacts and supports repeatable detection of the replica's operating cycle.

Adjustable Clicker

The integrated Clicker is responsible for a tactile trigger break. The user can adjust the break force to personal preference or reduce it to zero for a lighter trigger pull.

The Clicker allows adjustment of trigger pre-travel and over-travel. This makes it possible to set the trigger travel for more technical, fast, or controlled operation of the M14 replica.

Electronic system

The MOSFET Perun for M14 Semi Only offers 8 levels of trigger sensitivity adjustment for the first and second trigger stages. Changing the settings does not require modifying the trigger or gearbox, making it easier to tune the replica without interfering with its basic mechanical components.

The unit supports functions such as active brake, precocking, DMR mode, DSG mode, and rate of fire reduction. The Semi Only variant is especially useful in configurations where controlled semi-auto fire and fast trigger response are the priority.

Programming and configuration

Settings are programmed using the fire selector and trigger. The user can change the configuration without connecting an external programmer, which makes it easier to adjust the unit's operation to the current requirements of the replica.

Programming is supported by a multicolor LED, which helps read selected settings and system messages. Individual settings can be configured independently for fire selector positions, allowing more precise adjustment of the replica's behavior to the preferred shooting style.

Power supply and system protection

The Perun for M14 by Tokyo Marui/CYMA operates with batteries from 7V to 17V. The unit can work with configurations using different spring power levels, without limitations caused by the MOSFET itself.

The built-in low-voltage alarm is designed for Li-Po and Li-Ion batteries. The diagnostic system monitors the operation of the replica and the electronic unit, helping identify the potential cause of a problem more quickly.

The electronic fuse protects the replica and battery in the event of a serious malfunction, such as a short circuit or motor lock-up. After detecting a problem, the unit automatically disconnects the power supply, supporting protection of the electronics and drivetrain components.

Manufacturer

Perun is a manufacturer of electronic units, MOSFETs, and accessories for airsoft replicas. The brand focuses on solutions that improve control over replica operation, trigger response, and configuration options of the electrical system.