Mysterious part fell out of STECS

[hafnix]

Hello there,

recently I opened my STECS Standard and while fiddling around with it a small, rubberish part with some notches fell out of it. I don"t know if it fell out of the STECS or the STEM part and I cannot locate a spot where it could belong to. It does not fit anywhere obviously...

After putting the device back together everything is working normally, I cannot see any malfunctions without this mysterious part.

Can anybody tell me what this is and in which spot inside the STECS/STEM it belongs?

Thanks in Advance
Michael

[fallout9]

It's the fuze, be careful )

Try this:

[hafnix]

Ok I got it, thanks a lot. Although I don"t have the ATEM, I can now clearly see that wide open hole in front of the STEM