Dream Army Standard Gear Full Tune Up Set (18:1) / Version II

Dream Army Standard Gear Full Tune Up Set (18:1) / Version II
- Standard tune up kit for version II gearbox
- Package included :
- Gear set (18:1) / Pison (1 teeth) / Light weight bearing piston head /
- M4 air seal nozzle / Motor head gear "O" shape / Shim set
- Free Silicon hop up set / Oil Tamper Wire Airsoft Spring (1-pcs)
* Please select the spring power (M90 / M100 / M110)