That one.

You will note it stops the rotation of the threaded rod on the end of which is the Anson latch push button.

Believe it or not if that screw is loose the rod can rotate enough to fall out.

Mine did, and apparently this is a known issue.

I have no clue if they Locktite those at the factory now. They should.

Fortunately I found the part on skeet station 7. The gun won't come apart without the button.

A mid-bead from a Krieghoff is still out there.... someplace.

You'd think for what this hardware sells for they wouldn't fall apart...