Sijun Advance Gearbox
- Stock: Out Of Stock
- Model: Sijun Advance Gearbox
- Weight: 0.25kg
USD48.75
Sijun Advance Gearbox comes comes with metal gears upgrade and a change in a piston rod.
Gives a higher output of air for higher FPS for the Sijun Blaster units.
UPDATE (30/7/2021)!!: Gearbox unit now has the upgraded blowback piston rod with metal teeth.
Doesn't include Motor.