When purchasing or upgrading an airsoft gun, it's crucial to understand the function of each component, including gear sizes, inner barrels, and as we will talk about today MOSFETs. MOSFETs play a big role in your airsoft gun and help make your gun perform significantly better than it would in its stock configuration. So in this blog, we’re going to go over what a Mosfet is and the basics of it. So sit back grab a beer or a coffee if that’s more your thing and let’s get right into it.

What is an Airsoft Mosfet?

A Metal-Oxide-Semiconductor Field-Effect Transistor or MOSFET for short is a type of transistor widely used in electronic devices to manage the flow of electrical current. In airsoft, MOSFETs play a crucial role in regulating the electrical current that powers the gun's motor, enabling more precise control over firing rates and enhancing overall performance.

The GATE TITAN II is the best airsoft MOSFET on the market.
The GATE TITAN II is the best airsoft MOSFET on the market.

An airsoft MOSFET functions as an electronic switch, replacing traditional mechanical trigger contacts in the gun's electrical circuit. This setup powers the motor that drives the gearbox, ultimately firing the BBs. When the trigger of an airsoft gun with a MOSFET is pulled, it sends a signal—usually a low-voltage electrical pulse generated by a microswitch or optical sensor. Upon receiving this signal, the MOSFET activates and allows the electrical current to flow through the gun's circuit.

What Does an Airsoft MOSFET do?

One of the main advantages of using a MOSFET in an airsoft gun is that it can extend the lifespan of the gun's internals. When fired, the electrical current powering the motor can create surges that may damage the gun's electrical parts over time. MOSFETs help regulate these surges, protecting the components from potential harm.

Installing a MOSFET can help change your game style & the way you play.
Installing a MOSFET can help change your game style & the way you play.

Additionally, MOSFETs can enhance the gun's firing rate. By allowing for more regulation of the electrical current, a MOSFET enables the gun to fire faster without losing its accuracy or damaging the internal, providing players with an edge in the game where a high firing rate could come in handy.

Here is a Perun V2 Airsoft MOSFET installed in a V2 gearbox
Here is a Perun V2 Airsoft MOSFET installed in a V2 gearbox.

Some MOSFET units even offer programmable functionalities, like allowing users to customize their airsoft gun's firing modes. This may include burst fire, semi-only, low battery detection, or active braking. Programmable MOSFETs give players the power to fine-tune their gun's performance and customize it any way they want.

What are the different types of MOSFETS?

There are a few different types of airsoft MOSFETs available, each compatible with specific guns and the way they are installed. Some MOSFETs are easy to install, like just plugging it in where you would normally plug the battery, providing an easy upgrade for those who aren’t that tech-savvy. These are ideal for players looking to boost their firing capabilities quickly.

This is an example of the plug-and-play Airsoft MOSFETs we mentioned
This is an example of the plug-and-play Airsoft MOSFETs we mentioned

Other MOSFETs are intended for installation inside the gearbox itself, often offering more advanced features and increased durability. These internal units can provide better protection for the gun's internals and allow for more precise control over firing rates and functions. The choice of MOSFET largely depends on the type of airsoft gun you have and the performance enhancements you seek.

This is a V2 gearbox with a GATE TITAN installed.
This is a V2 gearbox with a GATE TITAN installed.

To give you an example of what kind of airsoft MOSFETs you can find let’s go over some of the most common ones. The most common MOSFET you’ll find is for the V2 gearbox which is usually your standard M4 airsoft gun. These are by far the most popular MOSFETs And you will want to go for the GATE series of MOSFETs such as the Gate Titan and the Gate Aster. Other options are available like the Perun hybrid v2, which you can attach the clicker to and have a more tactile trigger. Gambit did a Gambits Gudie on the Perun ECU on your YouTube channel. Check it out HERE if you want to see how to program an Airsoft MOSFET.

This is a Perun V2 Hybrid airsoft MOSFET.
This is a Perun V2 Hybrid airsoft MOSFET.

Next, you have the V3 Mosfets, now this is primarily for AKs and any other guns that use the V3 gearbox. Again the most common ones you’ll find for the V3 are the gate series of Mosfets as well as Perun V3 MOSFET who offer their own MOSFETs for AKs as well.

This is a Perun V3 Hybrid Airsoft MOSFET.
This is a Perun V3 Hybrid Airsoft MOSFET.

The Last most common MOSFET you’ll find is for the NGRS, These MOSFETs are not compatible with standard AEGs but only compatible with the Tokyo Marui Next Generation Recoil Shock Series of EBBs. These MOSFETs give the NGRS system a much-needed upgrade to perform better with a better trigger response. The best MOSFET you can get for an NGRS system is probably the GATE TITAN MOSFET.

How to install an Airsoft MOSFET

Installing an airsoft MOSFET can be a straightforward process, but those who have never upgraded an airsoft gun before may find it a challenge. For beginners, it's often more advisable to seek the assistance of a trained AEG technician or visit a reputable shop. The first step in the installation is to completely open your gun, which involves carefully taking apart your receiver and removing the gearbox.

Taking apart can be challenging so make you know what you are doing.
Taking apart can be challenging so make you know what you are doing.

Once the gearbox is open, you'll need to take out all the gears, pistons, and springs to access where the MOSFET sits. A good tip is to take a photo of the gearbox once it’s opened so you know where to put everything back. After that, you can install the MOSFET, which is typically a drop-in component. Be sure to screw in the MOSFET and run the wires along the gearbox, ensuring they won’t interfere with the motor.

Make sure you install the motor wires and the MOSFET wires correctly
Make sure you install the motor wires and the MOSFET wires correctly

be sure that your battery connector is going the correct way, if your gun is front-wired make sure it’s going to the front, and if it's rear-wired make sure it’s going toward the rear. Make sure you also have the motor wires in the correct place. Finally, reassemble the gearbox by putting all the gears, pistons, and springs back in place, securing the gearbox, and reinstalling it in the gun. This process may require some patience and attention to detail, so don't hesitate to ask for help if needed.

Final Remarks

We hope you found this blog helpful in understanding what an airsoft MOSFET is. Upgrading your airsoft gun can significantly enhance its performance, but it’s important to approach the installation with caution. While the steps we outlined in this guide provide a solid foundation, we strongly recommend that those inexperienced in working with airsoft internals seek out the assistance of a trained technician.

Our RWA B.A.D AEG comes with a GATE ASTER pre-installed.
Our RWA B.A.D AEG comes with a GATE ASTER pre-installed.

Proper installation is crucial not only for optimal performance but also for the safety and longevity of your airsoft gun. A professional can help ensure that everything is set up correctly, minimizing the risk of damage to your airsoft gun. If you have any questions or need further guidance, don’t hesitate to reach out to experienced airsoft communities. Places such as Facebook, Reddit, or local shops are great places to get advice.