I found the spring and plunger at S&W itself. So they are on their way. I still need a pin from a 3913 so I can pin everything through the grip, after I figure out how to drill that extremely-difficult-to-position hole.

I still can't figure out what the plunger is seated in when guys modify the plastic 3913 grips to fit on the CS9. Is there a plunger seat/heelpiece that the pin goes through that will fit in the plastic grips? Do you guys modify the one that came with the factory Hogue gummies and use it?

I am now wondering if when I was milling out the inside of the plastic 3913 grip to make it fit, if I took out part of the structure that actually served this purpose. I forget exactly what it looked like originally.

David