Specna Arms ready M4 V.2 gearbox, with microswitch - wires to the rear

Specna Arms reinforced ver2 ready-made gearbox for M4/16 airsoft guns with quick spring change feature and micro switch. The mechanism is tuned to approx. M120-125 level. The mechanical trigger contacts have been replaced with a micro switch. The gearbox wiring is at the back.

Features:

- Reinforced Ver2 Enter & Convert gearbox

- Microswitch

- M110 spring

- Polymer spring guide

- 8mm ball bearings

- steel 18:1 sprockets

- Polymer piston

- Polymeric piston head

- Padded cylinder head

- Polymeric nozzle

- Type 0 cylinder