Modify 8mm TORUS complete gearbox for M4A1/SR16 electric gun (front wiring) Torque SP120

Hi quality assembled gearbox for M4 electric gun!
the latest MODIFY- tech. knowledge is fully installed!

Included parts:
-TORUS 8mm gearbox with inspection holes
-SMOOTHER type modular gear set (21.6:1)
-steel grooved cylinder
-8mm steel bearing
-damper type cylinder head
-Anti reversal lever
-tappet plate and seal nozzle
-ball bearing spring guide
-ULTRA piston with piston head
-m120 spring
-silver wire set (Dean connector)
-trigger and trigger safety
-selector plate and cut off lever

Hi quality product for MArui, g&g, g&p, KA, modifiy electric gun