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We introduce the world first 4th generation mosfet. X-ASR is a highly reliable AEG controller. It has automatic resettable protection against battery reverse polarity, SMART FUSE and build-in self-test. It does not require additional fuse in AEG installation. 

Key functions:

  1. Mosfet. It targets the energy from the battery directly to the motor, bypassing the mechanical trigger contacts. In result, your rifle gains a higher rate of fire as well as faster trigger response. In addition, the trigger contacts are protected against burnout.
  2. Debouncing, which provides full compatibility with micro-switches, ensures full resistance to contact bounce (vibration).
    You gain a bigger ROF, a faster trigger response and your MOSFET is less prone to overheating.


Special features:

  1. Automatic resettable Protection Against Reverse Polarity. This function protects the motor and MOSFET itself in the event of reverse polarity. Reverse connection will not damage the MOSFET or motor, the AEG will work once you connect the battery in the right way.
  2. SMART FUSE, protects MOSFET in case of motor jam. The SMART FUSE prevents from overheating, overloading and overcurrenting. The MOSFET is protected in case of short circuit of signal and motor wires. X-ASR does not require additional fuse in AEG installation.  In case of too strong AEG configuration, the SMART FUSE will turn off the MOSFET in order to prevent overheating.
  3. BUILT-IN SELF-TEST – 2 LED allows for quick troubleshooting
  4. Thanks to its special conformal coating, X-ASR is resistant to heavy atmospheric conditions (Military Specification MIL-V-173C).


This unit is designed for mid-tuned AEGs (M120 spring, torque motor).