So I was browsing over on the HK international site and I found this.
http://i488.photobucket.com/albums/r...P30S_links.jpg
http://i488.photobucket.com/albums/r...30S_rechts.jpg
and a close up
http://i488.photobucket.com/albums/r...ngs_Entspa.jpg
and a link to the web page
http://www.heckler-koch.de/HKWebText.../1925/138/4/21