JeffTron Leviathan V2 Optical with CNC Retro Arms Trigger
Leviathan V2 Optical is an electronic ETU unit with Bluetooth, designed to be installed in gearbox V2 and V2.5 based on the TM standard. Thanks to its optical sensors for shot detection and fire selector position, and an ultra-short switch (just 0.13 mm), it enables a precise hair trigger mode. The Real Feel Trigger System (RFTS) simulates realistic trigger resistance using a spring and provides trigger reset after each shot. You can configure firing modes, rate of fire, active braking, pre-cocking, virtual magazine, and more in real time using the JeffTron app. The input and output ports allow connection of accessories such as flashlights, electric magazines, or an empty magazine sensor. The unit is coated with conformal lacquer. It supports high-RoF setups including DSG gearsets and is ready for Brushless motors like Warhead. All changes made in the app are saved instantly to the unit’s memory. Additionally, the unit comes with a CNC aluminum trigger from Retro Arms featuring an adjustable screw for pre-travel and stylish design.
Key Features
Bluetooth programming via the JeffTron mobile app (iOS/Android including smartwatch support)
Hair trigger – activates at only 0.13 mm of travel
Real Feel Trigger System (RFTS) – spring-loaded resistance and trigger reset
Optical sensors for cycle and fire selector position
9 firing modes including Binary Trigger and virtual magazine
Adjustable active braking
Pre-cocking function for instant SEMI shots
Brushless motor support (Warhead, T238, Specna Arms Dark Matter, and others)
Complete plug-and-play wiring harness with T-DEAN connector
Motor plus output delay mode for powering peripherals like drum mags, tracer units, or bolt catch sensors
Technical Specifications
Gearbox type: V2 / V2.5
Programming: Bluetooth app (Android / iOS incl. smartwatch support)
Cycle detection: Optical sensor on sector gear
Selector detection: Optical sensor with sticker
Wiring: Teflon (AWG16 and AWG22), Fr..






























