It is a perfect solution for those who want to buy a replacement gearbox at a reasonable price. The reinforced V2 version gearbox is designed to be fitted in most M4.

The firing mode selection lever which is used in this model allows for a trouble-free mount of the gearbox in the M4 type replicas. All you need to do is connect the motor and the power source and you can start shooting. It comes with an M115 spring allowing you to gain a velocity of about 330-355fps.

The set includes the complete gearbox with wiring and the motor which"s neodymium magnets, bearings.

Package Includes:
Version 2 gearbox
Motor