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AR MOSFET by JeffTron for V2 gearbox replicas with rear-wired battery setup.
Perfect upgrade for AEG M4, M16, MK18 and other AR-style platforms.
MOSFET prevents trigger contact burning, boosts rate of fire and extends battery life.
Compatible with batteries up to 17 V, including 7.4–14.8 V Li-Po batteries.
Electronics protected with conformal coating against moisture.

For more than 25 years, we know what you like about airsoft.
AR MOSFET by JeffTron is designed for airsoft AEG replicas with V2 gearboxes (especially M4 / AR15) and rear battery configuration. Thanks to the compact Micro MOSFET III integrated directly into the T-Dean connector, it ensures space-saving and easy installation. The wiring is prepared for direct connection to the original trigger contacts in the replica, requiring only basic soldering. This MOSFET is an electronic switch without active braking, replacing traditional mechanical switching via trigger contacts. This prevents contact burning, increases their lifespan, and also improves efficiency of the replica’s electrical circuit. It allows for higher rate of fire and longer battery runtime compared to standard wiring. It is particularly suitable for experienced technicians and service centers, as installation requires advanced knowledge of AEG replicas.
Installation must be done by a professional who can solder and disassemble AEG replicas. Do not use a transformer soldering iron. While the MOSFET is compatible with most V2 gearboxes, 100% compatibility cannot be guaranteed.
| Color | Combination |
| Gearbox version | V2 |
| Connector type | T-Dean |
| MOSFET | YES |
| Processor unit | NO |