Robert,
* It also does not look like it is assembled correctly. It would be dangerous to be discharged in its present condition.
* As a guess it does not look like the toggle's internal hook is properly engaged to the main spring's "U" shaped link.
* Disassembly/reassembly instruction are available in the Tech Info section of this site. A video is aslo available; but, I have not saved the URL.
* A gunsmith familiar with Lugers could reassemble properly in less than a minute unless broken/missing parts are involved.
* Nice looking piece. If all matching numbers, this condition should bring at least $1k (Insurance purposes).
* Trust this helps.