Norm,
If Mike Krause in San Mateo, CA cannot help you with that Borchardt item, I am not sure who can.
http://www.krausewerk.com/
Mike seems to have accessories for Borchardts and he reportedly has over 1,000 luger magazines in stock...
Doc Fisher and I joke with Mike that he needs to "inventory" all of those magazines and them list them for sale on e-Bay...but with making $ 15K modern lugers (.45 and Baby's), going through boxes of magazines just does not seem to be a priority...
Regards,
Pete... <img border="0" alt="[typing]" title="" src="graemlins/yltype.gif" />