JeffTron LEVIATHAN NGRS Optical M4 (Rear Wiring)

JeffTron Leviathan NGRS Optical
Leviathan NGRS Optical is an electronic ETU with Bluetooth, designed for installation in the NGRS gearbox by Tokyo Marui. Thanks to optical sensors for shot detection and fire selector, plus an ultra-short switch (only 0.13 mm), it allows for realistic hair trigger mode. The Real Feel Trigger System (RFTS) with a spring simulates the trigger resistance of a real firearm and adds reset after firing. With the JeffTron app you can configure fire modes, RoF, active braking, pre-cocking, virtual magazine and more. The input/output ports support connecting external devices like flashlights, drum mags, or empty mag sensors. The unit is protected by conformal coating. It is compatible with the original bolt catch and retains the empty mag cut-off function. It’s also fully ready for brushless motors like Warhead. All app settings are saved in real time directly to the unit.

Key features

Bluetooth programming via JeffTron mobile app (iOS/Android including smartwatches)
Empty magazine detection (using original bolt catch lever)
Hair trigger – response at just 0.13 mm
Real Feel Trigger System (RFTS) – spring resistance and trigger reset
Optical sensors for both shot and selector position
9 fire modes including Binary Trigger and virtual magazine
Active braking with adjustable strength
Pre-cocking function for instant SEMI response
Ready for Brushless motors (Warhead, T238, Specna Arms Dark Matter, etc.)
Full wiring included with T-DEAN connector (required for power)
Motor plus output delay mode for powering accessories like drum mags, tracer units or bolt catch sensors

Technical specifications

Gearbox type: M4 NGRS (also known as TM SOPMOD)
Programming: Bluetooth app (Android / iOS incl. smartwatches)
Cycle detection: Optical sensor on piston gear
Fire selector: Optical sensor with sticker
Wiring: Teflon (AWG16 and AWG22)
Voltage: 8.4–17 V (NiMH, LiPo, LiFe)
Protection: Current, thermal, undervoltage
RFTS support: Yes
DSG gear support: Yes
Accessory conne..