Our take: JG's MOSFET wiring harness for rear-wired large-plug AEGs fits any M4 / M16 / AR-style AEG that has battery wires running to the rear of the gun. You can easily use a large-to-mini adapter to achieve instantaneous mini-type battery compatibility.
The MOSFET is an inexpensive yet performance-boosting upgrade that allows your AEG deliver more crisp shots, more energy, and develop faster trigger response. The wiring harness includes all pertinent wiring, connectors, and even the MOSFET chip itself, so it's mostly plug and play.
Airsoft Megastore is NOT responsible for the installation of this product. If you are unfamiliar with Airsoft AEGs, we highly recommend taking your gun to a professional for installation.