There are 6 different gearset applications:
High Toque Modular Gear Sets (Ratio 21.6:1)
# GB-09-11 Modular Gear Set for Marui Ver.2/3 Gearbox
# GB-09-12 Modular Gear Set for 6mm Ver.2/Ver.3 Reinforced Gearbox
# GB-09-13 Modular Gear Set for 7mm Ver.2/Ver.3 Reinforced Gearbox
High Speed Modular Gear Sets (Ratio 16.32:1:1)
# GB-09-14 Modular Gear Set for Marui Ver.2/Ver.3 Gearbox
# GB-09-15 Modular Gear Set for 6mm Ver.2/Ver.3 Reinforced Gearbox
# GB-09-16 Modular Gear Set for 7mm Ver.2/Ver.3 Reinforced Gearbox
Each package comes with one set of bushes for fitting the cage into the gearbox shell. The bush sets are available separately if you decide to change your geabox shell from 6mm to 7mm or vice versa.
I have limited units of each on the way, ETA is 2 weeks if you'd like to reserve one PM me or email
sales@airsoftparts.ca .. if they become popular I will carry them in my regular inventory.