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Paytrail - Oma maksutapa kaikille
JeffTron M4 Bolt Catch MicroswitchJeffTron M4 Bolt Catch MicroswitchJeffTron M4 Bolt Catch Microswitch
11,90 €

Incl. taxExcl. tax

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Shipping costs are calculated automatically based on the total value of your shopping cart.


Orders placed before 1 pm (Eastern European Time)
will be shipped out on the same (Matkahuolto, GLS) or following (Posti) business day. Orders that contain installations or upgrade services will be shipped out after the job is complete.

Delivery on?

These are estimated delivery dates. Please take into account that orders are normally not transported on holidays and weekends. The order can be collected during the opening hours of your nearest pickup point. You can track your order with the tracking number found in the order confirmation email.

JeffTron M4 Bolt Catch Microswitch

Bolt catch switch is designed to work with Leviathan devices with input port. It gives you functioning virtual reload, which is used to reset the magazine capacity to the set amount, therefore adding some nice realism in to the game!


  • Bolt catch switch is pressure-activated tactile switch.
  • Designed to glue on the Bolt catch in the M4 style airsoft gun.
  • Solder 2 black wires to the leviathan board INPUT port.
  • Bolt catch switch solder on SIG and GND pad in the Leviathan device (doesn't matter which wire goes to which position).
  • In the "Leviathan by jefftron" app use interface "External input" to activate desired function "virtual reload".


Installation requires advanced soldering skills! Wires can't touch other pads and components on the board. Damage to the Leviathan will void the warranty! In some guns is necessary to grind bolt catch or lower receiver to fit wires from the switch.

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