JP has metal lower receiver and different gearbox. Other not so important stuff is also completely different so it is safe to say that it is completely different model and probably also company that makes it.
I heard a rumor that JP did preproduction for Cybergun and it was rejected. Maybe because of that some people think they are the same, since JP sold those guns as Cybergun.
Gerbox of cybergun and below JP
Jin Peng Famas...mini review - Filipino Airsoft (FAS) - Forum