Jefftron Leviathan M4 Bolt Catch - with microswitch

The JeffTron M4 Bolt Catch is designed to be compatible with older Leviathan ETU units that have an INPUT port.

The microswitch is activated when pressed and is designed to be glued onto the bolt catch lever of an M4-type airsoft gun. The two black wires of the switch are soldered to the SIG and GND terminals of the Leviathan device (it does not matter which side the wire goes to). The virtual charging function is enabled via the "External input" setting of the "Leviathan & Scylla by JeffTron" application.