...from the 1975 time frame, made up by a gentleman named Fritz Kiess in Suhl from standard lugers...
On the Herman Historica auction site, lot # 2148 :
http://www.hermann-historica-ohg.de/gb.html
<a href="http://forums.lugerforum.com/lfupload/fritz_kiess_madeup_carbine_copy1.jpg" target="_fullview"><img src="http://forums.lugerforum.com/lfupload/fritz_kiess_madeup_carbine_copy1.jpg" width="400" alt="Click for fullsize image" /></a>
Regards,
Pete...