Strange G&G mp5 trigger issue

[Dart]

So what happens is when you pull the trigger in full auto it fires in full auto, but if you continue to pull the trigger back it stops firing. Is there a trigger adjustment on a v2 mech box? The contact does not look worn or anything. And physicaly this issue should be impossible to happen.

Any ideas?

[Dart]

any ideas? I really want to get this thing off my kitchen table.

[audi_bhoy]

Could it be that the back of the sliding contact is bigger than the front, causing it to split the 2 metal contacts on each (or at least one) sides, so the current wouldn't go trough ...?