Professionally engineered MOSFET designed for Tokyo Marui standard gearbox version 3 AEGs. Replaces original trigger contacts to boost rate of fire and extend battery life without performance loss. Pre-soldered wiring (400mm motor leads, 600mm battery leads, 1000mm blue sensor wire) enables quick installation—simply cut to length and attach included connectors. High-quality 1.5mm² AWG16 wires with MPPE insulation ensure reliability. Conformal coating protects against moisture. Rated for springs up to M160 (75A single shot, 25A burst max 30s) and batteries to 17V (NiMH 8.4–12V, LiPo 7.4–14.8V). Zero idle current draw and no contact sparking. Package includes trigger switch, DeanT connector, 30A fuse, faston connectors, heat shrink tubing, and English installation manual. Expert soldering and disassembly required. Compatible with standard and common-brand gearboxes; minor modifications may be needed for some models.