Some time ago, I came up with a P38/01.
Took it to the range and within about half a dozen rounds the pistol misfired because the ejector spring plunger had popped out of the slide (and wound up only the good lord knows where.)
Ordered that parts. Took a long time to get them and indeed the plunger was the wrong part. Apparently two different designs for the plunger/spring components and the people who sell the parts don't know enough to ask which one the buyer needs.
I wound up making the part from a welding rod.
You have to look at these pichers in reverse order to get the right sequence.