Contact Us Tel:(626) 286-0360 Store Locations
Phone Support M-F 9am-5pm PST
Browse by Type or Category
FREE SHIPPING for orders over $99! New deals released hourly and daily. See Deals Here!

Perun V3 Optical Low Resistance MOSFET for Tokyo Marui Spec Version 3 AEG Gearboxes

ID: 92414 (Mosfet-PerunV3)
Perun V3
Perun859188924147Perun V392414
5.0 stars, based on 1 reviews
Perun V3 Optical Low Resistance MOSFET for Tokyo Marui Spec Version 3 AEG Gearboxes
Hover or touch above to zoom
Youtube preview Product image 1 Product image 2 Product image 3 Product image 4 Product image 5 Product image 6


This item is currently Sold Out


  • Ultra compact mosfet designed for version 3 gearboxes
  • Specialized transistor w/ very low resistance
  • Cycle control and programmable firing modes
  • Active brake and precocking
  • LiPo protection; can be used with LiPo batteries up to 14.8v
  • Ultra-low resistance wiring
Perun V3 Optical is a device that replaces mechanical contacts in version 3 gearboxes with an electronic circuit based on MOSFET transistors and adds a multitude of new functions to your replica.

Use of a microcontroller enhances capabilities of your airsoft gun by providing possibility to set any combination of the following 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, precocking and battery protection on and off is done solely by using easily memorable sequences of fire selector switching and trigger pulls. That allows changing the settings at any moment in a matter of seconds, even under enemy fire.

Elimination of mechanical contacts solves the problem of their gradual wear. MOSFET transistors utilized in Perun V3 Optical have a much lower resistance than contacts, which also 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 V3 Optical minimizes the number of moving parts in your replica, increasing reliability and ensuring proper functioning of all firing modes. Perun V3 Optical itself has no moving parts at all thanks to use of optical sensors for gear, trigger and selector plate detection.

One of the most important features of Perun V3 Optical is precocking. Fast trigger response can be a matter of victory or defeat, especially in CQB situations. With precocking enabled, piston will remain in rear position after each shot with spring already compressed, ensuring that next shot will be fired immediately after you pull the trigger. Microcontroller uses data from optical sensor to calculate current sector gear position and speed. With this information, after releasing the trigger, smart algorithms are able to transfer only enough power to the motor to make the piston stop in the correct position, or in high ROF setups, to let the motor inertia push the piston back and stop it using active braking right. This saves your battery and reduces motor wear. Precocking works in semi, burst and full-automatic modes.

Perun V3 Optical 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 if you do not want to use precocking. It can also prevent compression of the main spring for a longer time, if you will fire a shot with AB on before a storing your replica for a longer time. Active brake can be switched on or off at any time in few seconds.

Battery 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 that are 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 enabling 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.

Perun V3 Optical is delivered with Muldental silicone wires, which are praised by airsoft techs and widely considered best for airsoft electric guns.

Thanks to use of exceptionally efficient and powerful MOSFETs, the device can be used in replicas with any main spring. The maximum rate of fire is 50 RPS.

Permissible Battery Voltage: 7V-14.8V
Max FPS: 650 FPS (using .20g BB's)
Max Rate of Fire: 50 RPS

Manufacturer: Perun Airsoft

About Perun

Perun was established in 2016 with the aim of designing and manufacturing MOSFET devices and other parts for AEGs. After years of designing and testing, we offer you products that will work reliably even in most extreme situations and enhance the capabilities of your replicas.All of our design work and most of the manufacturing is done in the European Union state of Poland. That allows us to reach our main goal - keep the highest quality possible. We are in constant contact with players, airsoft techs, shops and consult with them to ensure that our products satisfy their needs.

1 Customer Review

(Write a review)

by Bill S. on 01/21/2021
"i put one of these in my elite force mp5k and boy is this thing great. the fitment for it is perfect in cyma v3 gearboxes. i found wiring this very easy. the wires on it are very high quality and are plenty long to fit into any replica utilizing a v3 gearbox. you can adjust the trigger pull sensitivity which is great. binary trigger or double shot doesnt allow you to spam it super fast which i like, unless you have like a high rof dsg or something which in this case it probably is spamable. the only thing annoying with installing this is adjusting the sticker on the selector. if you dont get it perfect on the first try you have to reposition it. this was annoying for me specifically because i was using an mp5 so i had to take the gearbox out of the receiver each time i screw up the sticker. the kit comes with 2 fuses 40amp and 25amp, motor connectors, fuse connectors, 4 stickers for the trigger and selector each, positive wire (red), male and female deans, and the mosfet of course which has pre soldered wires, the perun ace card with programming features, heat shrink, and 2 perun stickers. soldering the signal wire on the positive prong of the deans connector will work which is what i did because of the tight space working in the mp5k. i was not able to fit a fuse in it because the connectors meet up inside the handguard which is a super tight to work in. 10/10 mosfet. totally worth the money

Comments & Community

Discuss about Perun V3 Optical Low Resistance MOSFET for Tokyo Marui Spec Version 3 AEG Gearboxes with your friends and fellow shoppers!

Have an urgent question about this item? Contact us, our resident experts are standing by to answer your questions!

California Proposition 65 Warning: Cancer and Reproductive Harm -

This item is currently Sold Out. Most out of stock items are restocked within 1-3 weeks. Some items may take longer. Please add this item to your wishlist to keep posted on its availability.

Customers who bought this also purchased

Parts and accessories may not be compatible with the product displayed on this page. For compatible parts/accessories, see the You May Also Need section and please verify details on the product description page.