If you've got a broken CYMA AK, MP5, or Glock 18C AEP, especially with a major gearbox malfunction, you can now find complete gearbox sets of these at Get Reload. With the exception of the gearbox for the AEP, the AEG gearboxes are complete with their own motors, less hassle for you in finding a motor to rev them up and fire.

CYMA CM03 MP5 Complete Gearbox Set W/ Motor (CM03)

CYMA Complete AK AEG Gearbox Ver.3 With Motor (CM02)

Cyma Glock Gearbox (CM09, AEP)