Jefftron is a Czech electronics brand for airsoft automatic electric guns (AEGs), founded in 2011 by Ing. Filip Nemec from Hermannovo Město. The company specializes in designing and manufacturing advanced AEG control modules — electronic trigger units (ETUs) and MOSFET controllers — that replace conventional mechanical electrical contacts and give the player full digital control over firing characteristics. Jefftron's tagline is "Make your gun smart," which is an accurate description of what every product in the lineup does.
Background and Market
Jefftron was built in response to growing demand from advanced airsoft players and technicians for electronic solutions that eliminate the primary weakness of classic AEGs — contact erosion caused by electrical arcing on mechanical trigger contacts. Jefftron modules use optical and electronic sensors instead of traditional contacts, dramatically extending system lifespan and enabling digital configuration of the replica's functions. Today, Jefftron products are stocked by reputable airsoft retailers worldwide and are the go-to choice for technicians professionally upgrading AEGs.
The Leviathan System
Jefftron's flagship product line is the Leviathan family of modules — advanced ETUs designed for various gearbox types. The Leviathan V2 and V2 Optical support M4/AR15 platforms (V2 gearbox). Optical models replace the mechanical contact with an optical sensor for instant trigger response and zero contact wear. The Leviathan V3 Optical supports the V3 gearbox (AK platforms). The Leviathan NGRS Optical is designed for Tokyo Marui Next Generation Recoil Shock replicas. The Leviathan EVO3 supports the AEG EVO3 platform. The Scylla V2 series represents the next generation of units, combining a MOSFET with a multi-function controller. Built-in Bluetooth on equipped models enables full configuration via a dedicated iOS and Android app without disassembling the replica.
Features and Configuration
Leviathan modules offer the full spectrum of advanced control features: active motor brake to shorten cycle time and improve trigger response, rate of fire (ROF) adjustment, semi and full-auto modes, programmable burst fire (2–20 rounds), empty magazine detection, and battery over-discharge protection. The RFTS (Real Firing Trigger Simulation) system, available on select models, simulates the physical resistance of a real trigger pull, adding a layer of shooting realism. Modules support LiPo 2S–4S and LiFe 3S–4S batteries. Full gearbox integration eliminates the need for soldering and allows plug-and-play installation by the player themselves.
Jefftron at Militaria.pl
At Militaria.pl you'll find Jefftron Leviathan modules compatible with the most popular gearbox platforms — both V2 versions for M4/AR platforms and V3 versions for AK platforms. This is the choice for players and technicians looking to get maximum performance out of their replica: lightning-fast trigger response, precise firing mode configuration, and full electronics protection. Jefftron — intelligent control for demanding airsoft players.
