Gate MERF 3.2 3rd Gen Advanced Mosfet Unit

Code: M32
  • Plug & Play / Installed
  • 3rnd Burst and ROF Adjuster
  • Programmable Smart Trigger

Generation 3 Micro Computer Programmable Controller Chip Set designed to add a huge variety of functionality to Airsoft AEG. 

Full description


The chip is built to be as compact as possible, requiring the smallest amount space possible, and is specially coated to the Military Specification (Mil-Spec) MIL-V-173C. The chip provides active breaking, which stops the motor from over spinning. The in-built MOSFET is designed to achieve a higher rate of fire and trigger response, as well as protects the mechanical trigger contacts by directly bypassing the contacts and going straight to the motor. The chip set also provides protection against the over-discharge of LiPo battery, and once activated with prevent them from dropping below their nominal usage levels by constantly monitoring the voltage then stopping the weapon from firing when the power is too low. The system also provides protection from contact bounce, providing a higher ROF, a better trigger response and making the unit less prone to heating. This LiPo can has a working range of 3v to 15v, making it ready for 11.1v LiPo Batteries. The body of the unit is coated to the Mil-Spec variation MIL-V-173c, making it resistant to atmospheric conditions. The package comes with everything you need to connect up the unit, with spare wires for different trigger setups and even Deans Connectors. This is perfect for those Airsoft Players who want the absolute best out of their weapon, adding a multitude of features which improve game play and performance.

  • Battery Support: 7.4v LiPo, 11.1v LiPo, 12.8v LiFe (See Special Instructions)
  • Operating Ranges: 3v - 15V
  • User Guide: merf32-en.pdf


  • 12 Months Warranty
  • Multifunctional Programmable AEG Controller
  • Rate of Fire Control
  • 3 Round Burst
  • Plug and Play Easy Connection or Full Install
  • 3rd Generation Mosfets
  • LED Display
  • Low current Consumption (0.15mA)
  • Low resistance (2.4mΩ)
  • Withstands continuous fire with the use of M170 spring
  • Withstands single shots with M210
  • Active Break
  • Trigger Protecting MOSFET
  • Battery Over-Discharge Protection
  • Debouncing to prevent contact bounce
  • Smaller and more compact than over units on the market
  • Mil-Spec MIL-V-173C Coated
  • Increases the ROF of your AEG
  • Provides a better Trigger Responce
  • Heat-up Resistant Unit
  • Increase the service life of batteries
  • Protects Jammed Rifles from further damage
  • Protected from Overheating, Overloading and Short-Circuiting
  • Kit comes with all required parts
  • Protection for Li-Po, Li-Ion, Li-Fe, Ni-Cd Batteries

Package Includes

  • MERF 3.2 3rd Gen Advanced Mosfet Unit
  • Deans Connector Male x1
  • Deans Connector Female x1
  • Single Signal Wire for Trigger Contacts x1
  • Double Signal Wire for Trigger Contacts x1
  • System Programming Button x1

Special Instructions

Should you need any help installing the MOSFET please feel free to call our workshop on: 01484 644709.

Support for more battery types (Such as Ni-Mh) and can be activated by disabling the discharge protection on the chip.

Please note that the warranty covers the unit from defects, not improper installation. Please read all user guides before installing.

Please remember when installing the device to ensure your AEG is clear before use,

Ensure that when wiring up the device the Positive and Negative battery terminals are the correct way around as this will cause immediate damage to the unit.

For warranty related issues please visit:

Version Comparisons

GATE Mosfet comparison chart



Parts & Accessories Type
Internal Parts
Internal Part Type
Patrol Base - Warning Icon
Patrol Base - Warning Icon
Parts Fitting


Colour Wheel Greyscale
Item Colour
Construction Icon
Mil-Spec MIL-V-173C Coated

Part Specific

Part for Power Source Type

Electric Part Specific

Gearbox Version Compatibility Variant
Most Airsoft AEG

Size guide

Parts Fitting

Upgrades and Downgrades should only be undertaken by experienced players, or Airsoft Technicians. Please note, changing any internal parts of a weapon voids its warranty unless done in-house by our staff. 

Please ensure that when fitting parts the part purchased is the correct part, as once a part has been fitted we cannot accept return.

We do know that players love to tinker, so we're here to give you help should you require it, and if needed you can get in touch with our workshop for more help!

Unique Parts

Please note that some parts may be unique to a specific brand of weapon. For example: Parts for an ASG M4A1 may not fit an ICS M4A1.

Parts from the same brand typically have a high chance of fitting, though be warned, some replicas use unique parts, so please ensure the part will fit before you attempt to fit it.

If you require help with fitting any parts feel free to get in touch with us via our Contact Us Page.