Perun V2

The use of a microcontroller allows enhancing the capabilities of your airsoft gun by providing a possibility to set any combination of firing modes under “SEMI” and “AUTO” selector positions, independently:
- safe
- semi-automatic
- 2 to 5 round burst
- full-automatic
Programming of all of the settings, not only firing modes but also switching active brake and battery protection on and off is done only by using easily memorable fire selector and trigger sequences. That allows changing the settings at any moment in a matter of seconds, even under enemy fire.


Perun V2 is a device that replaces mechanical contacts in version 2 gearboxes with an electronic circuit based on MOSFET transistors and standard wires with high quality low-resistance wiring.

Elimination of mechanical contacts solves the problem of their gradual wear. MOSFET transistors utilized in Perun V2 have a much lower resistance than contacts, which increases rate of fire. Small elements in the trigger mechanism responsible for semi-automatic fire frequently malfunction, especially in replicas built on parts made by many different manufacturers. Perun V2 minimizes the number of moving parts, increasing reliability and ensuring proper functioning of all firing modes.

Perun V2 allows retaining mechanical trigger lock for increased realism.

Thanks to use of exceptionally efficient MOSFETs, the device can be used in replicas with main springs up to M170. The maximum rate of fire is 40 RPS.


Perun V2 has an active brake allowing to stop the motor after each shot. In case of double shot problem in replicas with high rate of fire, active brake will be an effective solution. It can also prevent unnecessary compression of the main spring and tappet plate springs by keeping the piston in front position between shots. Active brake can be switched on or off at any time in few seconds.


Batter protection mode is dedicated to Li-Po batteries. Should the battery voltage fall to a dangerously low level, user will be notified by short sound signals repeated every 30 seconds. This may also be freely switched on and off.

Double shot mode allows for easy double shots in semi-automatic setting. After initiating this mode, if semi-automatic fire is set, shots will be fired not only when the trigger is pressed, but also when it’s released.

The integral part of Perun V2 is a ready for installation low-resistance wiring based on 16 AWG wires compliant with American MIL-STD-681 military standard. In spite of relatively heavy gauge, the wires will fit into every gearbox thanks to both thin and very durable polyolefin-fluoropolymer insulation (external wire diameter is 1,91mm). Perun V2 is available both front and back wired.


Perun V2 was tested with positive outcome in gearboxes of the following manufacturers: G&P, G&G, Classic Army, KWA, Ultimate, A&K, PJ, JG, Specna Arms, Cyma. That refers to gearboxes in Tokyo Marui standard. Be advised, that Perun V2 will not fit to gearboxes diverging from that standard, i. e. ARES EFCS. Perun V2 fits to elongated V2 gearboxes used SR25 replicas.