Geonox Airsoft goes over the features of the MOSFET-equipped CM.135 AEP from CYMA... "Here we look at the CM.135 from Cyma. It is an AEP (Automatic Electric Pistol). This airsoft pistol is under 0.5 joules, so from 14. It is a toy. The pistol has full auto. The highlights include the thread, the metal slide, the SAI BLU licensed markings and, above all, the Jefftron Mosfet upgrade."