G36C stuck on full auto?

[p0nch3]

So just decided to play around with my Umarex(Ares) G36CV and semi works just fine but when if I use full auto for a few seconds, and I let go of the trigger, it gets stuck on full-auto for a few seconds. I actually made a video and it ended up getting stuck for a pretty long time, so much so that I had to stop the video to be able to switch the fire selector.

Was curious what people thought it was, maybe the ARL not having enough tension when I fire on full auto or what not? Just wanted to get some ideas before opening it up again, the microswitch always gives me trouble when I open it.

Here's the video (Its still processing so it may not be up until later)
http://youtu.be/qxcd-gqYkTQ

[lurkingknight]

ARL doesn't do anyting aside from stop the gears from unwinding when you let go of the trigger.

It might be that the microswitch needs replacing. That's where'd I'd look first.