[ithacaartist]

I'm with Doug, too. Not feasible with this design.

In the Erma wannabes, the sear interface with its release runs underneath the barrel extension, and there is no side plate to transfer the trigger pull. It would be much easier to convert one of them. For a Luger, it would be necessary to create a similar action, then effectively divorce the sear's set and release from the recoil-powered cycling of the action (extraction and chambering). It could be done, but what would we do without our pretty little side plates? The external lines would necessarily change!