Hey, I have a problem, for some reason my HK416 Gearbox works as a death machine literally, something breaks down, you replace it, after few hours that breaks down as well. Here is history of breakdown:
Gear, then piston, then another piston, then seems like a gear again. What could be wrong with that? any good place to buy completely new Gearbox that would be good quality? or how do I fix current one?
Right now I think its' locked up, well when I insert battery and push trigger I hear clicking sound, almost like motor is ready to spin yet its locked. Not sure though what it is either lock up or gear broke.