Complete QD UPGRADE gearbox V3 for AK with M120 - rear wiring
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. Customer has to insert gearbox into body. But as ussual, requires advanced knowledge of the function of airsoft guns.
Offered gearbox is MARUI standard. It is made of reinforced metal alloy with quick disassembly spring. Remove spring guide within 10 seconds. The trigger is equipped with a microswitch.
Table of parameters:
|Gearbox||Reinforced gearbox with quick spring dismantling (QD).|
|Wiring||Wiring is low resistance with silver. No fuse Wiring is long enough for front wiring (Depend on model). Equiped with small Tamiya connector.|
|Trigger||Micro switch trigger contacts.|
|Bearings||Gearbox is equiped with two type of the bearings. Motor gear has pair of 8mm ball bearings. Spur and sector gear has 8mm stainless steeel bearrings.|
|Gears||Gearbox is equipped with CNC steel gear set with ratio of 18:1. Gears are well oiled and shimmed.|
|BB supply cam||Sector gear has bullet supply cam. It increase chamber "open time".|
|Cylinder||Full air cylinder without the hole. Suitable for inner barrels between 370mm and 550mm.|
|Cylinder head||Cylinder head is made of aluminum on CNC machines. It has two sealing rings and rubber flat stopper.|
|Nozzle||Nozzle is made of aluminum on CNC machines, with one O-ring. The length is 19,7 mm|
|Piston head||Head of the piston head is aluminum, back-pressure, made on CNC machines. Equipped with ball bearing.|
|Piston||Piston has a full metal teeth and handle strong springs. The body of the piston is made of plastic.|
|Spring||Gearbox is equipped with M120 progressive spring.|
|Spring guide||Metal spring guide has ball bearing.|
Some tips for installation:
- If you want to install M130 spring, please remove piston head bearing. Spring wont fit. Or cut about 1cm of the spring.
- We do not recommend lipo battery 11.1V due to high currents, which can cause contact tan.
- 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.
- 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, worngears, trigger contacts the piston .. etc.)
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