[Mauser720]

NoLuck -

Per your request here are some pictures that hopefully will illustrate the little button that you are missing from your Trommelmagazine.

The first picture shows you how the top of this little button looks.

The second picture shows you the little spring that is under this button.

And I only included the third picture because this slot is not shown on the back of your magazine. I think you had your winding lever on top of this slot when you took your picture and that is why it must be obscured. However, if you do not have a slot like this on the back of your magazine, then that is something different that I have not seen before. I'm assuming you do have it, and that it is just behind the winding lever in your picture.

Other folks on this Forum know much more about these than I do, and some are also very handy. Possibly someone could make this little button and spring for you.

Or you might check with "Luger Doc" on this Forum and see if he has any parts, etc.

Hope this helps.