Jefftron is a Czech manufacturer that produces and sells electronic control units (MOSFETs) primarily for airsoft guns (especially electric guns, AEGs).

The electronic trigger unit (ETU) and FET switch are popular and highly rated among advanced players and those interested in customization.

It offers many electronic features such as improved trigger response, faster semi-auto, pre-cocking, active braking, and burst function.

Models such as the Leviathan series can be linked to a smartphone app to allow for detailed settings such as firing patterns and trigger response.

Recommended for those who want to seriously customize their electric guns and airsoft players who want the comfort of an electronic trigger!