Airsoft Introduction

What is an Airsoft MOSFET? The Ultimate Guide

by wangsandy on Feb 08, 2023

What is an Airsoft MOSFET? The Ultimate Guide

Airsoft guns are popular among hobbyists and competitive players alike. Their electrical systems play a crucial role in the overall performance of these guns. One key component that has revolutionized airsoft gun technology is the airsoft MOSFET. In this article, we'll discuss the importance of MOSFETs in modern airsoft guns and how they can improve your gun's performance.

What is an Airsoft MOSFET?

An airsoft MOSFET is an electronic component that replaces the traditional electrical system in an airsoft gun. It acts as an intermediary between the battery and the gun's gearbox, controlling the flow of electricity and providing a range of advanced features. MOSFET stands for Metal-Oxide-Semiconductor Field-Effect Transistor, a type of transistor commonly used in electronic devices.

How does an Airsoft MOSFET work?

An airsoft MOSFET works by controlling the flow of electricity between the battery and the gearbox. It acts as a switch, turning the electrical circuit on and off as needed. When the trigger is pulled, the MOSFET allows a small amount of electricity to flow to the gearbox, causing the gun to fire. The MOSFET can also regulate the flow of electricity, preventing voltage spikes that could damage the gearbox and other components.

Types of Airsoft MOSFETs

Basic MOSFETs (Linear MOSFETs)

Basic MOSFETs are the simplest type, offering benefits like improved trigger response and protection against voltage spikes.

Advanced MOSFETs (Switching MOSFETs)

Advanced MOSFETs offer more advanced features, such as programmable fire modes and burst settings, allowing for greater customization and control.

Comparison of Basic and Advanced MOSFETs

While basic MOSFETs are more affordable and provide essential benefits, advanced MOSFETs offer more advanced features at a higher price point. Your choice depends on your budget and desired features.

Why use an Airsoft MOSFET?

You should use an airsoft MOSFET in your airsoft gun for several reasons. Firstly, they offer a range of advanced features, such as improved trigger response, reduced electrical resistance, and protection against voltage spikes. Secondly, they can extend the lifespan of your airsoft gun by preventing damage to the gearbox and other components caused by electrical faults. Thirdly, airsoft MOSFETs can improve the overall performance of your airsoft gun, making it more effective in combat and increasing your chances of winning.

Benefits of Airsoft MOSFETs

By managing the flow of electrical current, MOSFETs help improve trigger response, extend the gun's lifespan, and offer advanced features, enhancing overall performance and reliability.

Improved Trigger Response

With a MOSFET, the electrical current flows more efficiently, resulting in a faster and more responsive trigger.

Reduced Electrical Resistance

MOSFETs lower electrical resistance, which increases the gun's overall efficiency and reduces the risk of overheating or damage.

Protection Against Voltage Spikes

MOSFETs can protect your airsoft gun's components from voltage spikes that may occur during use, preventing damage and prolonging the gun's lifespan.

Extended Lifespan of Airsoft Guns

By reducing wear and tear on electrical components, MOSFETs help extend the life of your airsoft gun, saving you money on repairs and replacements.

Enhanced Performance and Advanced Features

Some advanced MOSFETs have programmable fire modes and burst settings, giving you more control over your gun's performance.

How to get an Airsoft MOSFET?

The Kestrel V2 ETU is one of the Advanced MOSFET compatible with the standard Tokyo Marui V2 gearbox. It can make your AEG much smarter, more reliable, and faster in response. You can customize AEG's shooting parameters by connecting the "Eshooter" App to experience a different shooting Journey.

Recommended Reading:
What is an Airsoft Electronic Trigger Unit(ETU)?

Maximize Your Airsoft Experience with Eshooter KESTREL V2 - V29 Version!

Why so many airsoft players choose smart ETU?

How to Installing Airsoft MOSFET?

Installing a MOSFET may require soldering and electrical knowledge. It's recommended to seek professional assistance to ensure proper installation and avoid damage.

General Steps for Installation

  1. Disconnect the battery and disassemble the gun.
  2. Remove the old electrical components.
  3. Solder the MOSFET according to the manufacturer's instructions.
  4. Reassemble the gun and connect the battery.

Following the Manufacturer's Instructions

Always follow the manufacturer's instructions for your specific MOSFET model to ensure proper installation and optimal performance.


Airsoft MOSFETs have become essential for players looking to enhance their airsoft gun's performance and reliability. By understanding the different types of MOSFETs and their benefits, you can choose the best one for your


What are the differences between an airsoft mosfet and traditional trigger contacts?

An airsoft mosfet (Metal Oxide Semiconductor Field-Effect Transistor) is an electronic component that replaces the traditional trigger contacts in an airsoft gun. Unlike traditional trigger contacts, which are mechanical in nature and prone to wear and tear, a mosfet is a solid-state device that operates electronically. The mosfet controls the flow of current in the gun's electrical circuit, allowing for improved trigger response, rate of fire and power management compared to traditional trigger contacts. The mosfet also provides more consistent and reliable performance, as well as protecting the gun's wiring and components from damage due to over-discharging of the battery. Additionally, the mosfet can provide a wider range of programming options and customizations, further enhancing the performance and versatility of the airsoft gun.

Are airsoft mofsets legal for use in all airsoft fields and game modes?

The legality of using an airsoft mosfet in airsoft fields and game modes can vary depending on local laws and regulations, as well as the rules and guidelines set by individual airsoft fields and organizations. Some airsoft fields and game modes may allow the use of airsoft mofsets, while others may place restrictions or prohibit their use altogether. Before using an airsoft mosfet in any airsoft game, it is important to consult the rules and regulations of the specific field or organization and ensure that you are in compliance with all applicable laws. Additionally, it is important to use airsoft mofsets responsibly and within the established limits and guidelines, to ensure the safety of all participants and the integrity of the game.

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