Is this what it looked like Timothy? Take special note of the spring loaded device behind the rear sight. If so, Check out the Luger Centerfold for July of last year. It's too bad that the story that was posted with it is not currently available on the forum website, or at least my quick look didn't reveal it's location. Maybe if Dok gets some spare time, he could resurrect the story pages that were posted with each of the centerfold photos.
regards,
John
http://www.lugerforum.com/images/FrontPage/jul01.jpg