[pizzainthemorning]

I've got a JG M4. There is a very strange pattern to shooting. When on safe, the trigger is safe. When on auto, the gun shoots auto. When on semi, it will alternate between semi automatic and fully automatic. This isn't a freak occurrence, it happens every time.

So I've ruled out things like too much grease screwing up connections, or stripped wires sometimes making contact. Fire selector, selector plate, and all parts in the gearbox look to be in good condition, and switching from safe to semi to auto seems fine, with a very normal click.

I think it has something to do with that little latch in the gearbox that interacts with the selector plate and gear (sector?), that seems like more of a mechanical thing that would be more regular. I added some lube to that piece to make sure it moves nicely, and ensured it's not too tight/loose.

Any suggestions?

Alex