||This gearbox is very good. i have taken it apart for a spring swap and had this chance to view the parts closely ( i will list the parts and quality at the end). I bought the gearbox for a g&g raider and had to customize the wires in order to makre it work. but afetr all of the cusomizing i have found it to be an excellant gearbox for the money.
bearing bushings (not ball bearing)/excellent
plastic cylinder head (one o-ring)/good
air nozzle (no o-ring)/good
plastic piston with full metal teeth (second tooth is not removed)/excellent
plastic piston head (not sure if it is ball bearing)/excellent
full metal spring guide (not ball bearing)/excellent
standard v2 tappet plate/good
standard trigger box/good
standard anti-reversal latch/good
Reinforced steel gearbox shell/excellent(only time will tell)
silver low resistance wiring/excellent
Only time will tell for the durability of this gearbox, please remember you may not get a gearbox that is as duable due to factory issues, so be ready for the liability. overall great gearbox.
Rating: [4 of 5 Stars!]