Here are 2 videos that I thought were educational. The vids are porr quality but info is good

https://www.youtube.com/watch?v=5nqu...UbjXYL&index=1

https://www.youtube.com/watch?v=gOdI...UbjXYL&index=3

I didn't know about the freezer test

I've mentioned earlier that my brother in law's CW9 trigger goes all the way back to the frame. So there's probably no trigger stop.