had the upper rifle in the mauser in auction thread before

http://forums.nitroexpress.com/showflat.php?Cat=0&Number=222536&page=0&fpart=17&vc=1

"build by Kupfer in Kassel with a FN action and Heckler&Koch polygonal barrel /308 Win for a special customer of H&K in a time when this barrels were not available on the open market."

so it seems at least 10 were made, maybe more. could we say it was a modern version of the Plezier mauser rifle given to good friends, customer, maybe the one or the other politian in the neighborhood.just the thing we calling natural corruption.