Complete CNC QD gearbox V2 for M4/16 with M150 - wiring to front

Durable CNC aluminium gearbox ver.2. Made of aluminium 7075. Beautiful looks, high precision, high intensity. Suitable for those who like high precision and light AEG players. Gearbox has unique design. You can remove spring with the spring guide very easy from the back end. Without gearbox disassembly. So you can easy change spring.

Complete pre-assembled gearbox is a good alternative for those who want a complex upgrade your weapons. Without having to fight the compatibility of internal parts, asse,bly and shimming.  Above all, price is cheaper compare to separate parts purchase. Customer has to insert gearbox into body. Just it. But as ussual, requires advanced knowledge of the function of airsoft guns.

Offered gearbox is from the holes and size point of view MARUI standard.

Table of parameters:

Some tips for installation:

• 11.1V  lipo battery  can worn trigger contact faster. It is due to high currents.
• Spring in the gearbox can be changed only before inserting into the body of weapons. After that, this is not technically possible, because the rear part of the body usually has not hole for spring remove.
• We have tested this gearbox on Dboys and AimTop brand only.  For other models, we can not confirm compatibility. Technically it is possible to install gearbox to other brands, but may require minor modification. Ensure good alignment with the chamber and barrel.
• Gearbox is designed for M4 / M16 / SR16 / HK416, etc. Due to the length of the nozzle, trigger and selector plate is not possible to install gearbox into MP5 or SCAR.
• The warranty period is two years. But replacing of the spring is very easy and we can keep an eye on the customer exchange to extremely strong. It can shorten the life of the internal parts or completely damaged. For this reason, the warranty is on the product mistakes only. Not on the common wear (for example, worn gears, trigger contacts the piston .. etc.)
• Colour of the gearbox anodize may be different.