This is what I know about them so far, translated from German. Do not believe anyone at their shop speaks English and have yet to find any dealer of their product who speaks English either. Trying to get either Alex Roy or Aimpoint USA interested in their mounts. They appear to be top shelf overseas.
The company Henneberger was established on 11.29.1966 by master gunsmith Rudolf Henneberger in Muennerstadt. From 1971 Rudolf Henneberger worked for the firm. FW Heym GmbH & Co. KG, also based in Muennerstadt as head of hunting weapons. His own operation ran parallel further addition to his work at Heym. During this time, the legendary double rifle Big Five, which was auctioned by Safari Club International was created.
In 1987, Rudolf Henneberger ended his tenure at Heym and son Frank Henneberger joined as an apprentice in the gunsmith craft in his father's business.
A second income created machining center - In the year 2000 through the acquisition of a CNC.
01.01.2004 took son Frank Henneberger the operation from the Father, today has operations in the company.
In October 2009, followed by the biggest step to date: The move to the newly built site.
There is now the company Henneberger of 14 people carry-out work for hunters, gunsmiths and gun shops in Germany and abroad. The now equipped with several processing centers milling produces not only their own products (Riflescope Mounts, mounts for red dot sights etc.), parts for machinery and transport equipment.