Otto Eberhardt Patronenfabrik

Otto Eberhardt Patronenfabrik (English: "Otto Eberhardt Cartridge Factory") was a munitions company established in 1860. The company's Hirtenberger Patronen, Zündhütchen und Metallwarenfabrik (English: "cartridge, primer and metalware fabrication in Hirtenberg") near Wiener Neustadt (proofmark "am")[1] used forced labor during World War II from a sub-camp of the Mauthausen-Gusen concentration camp and produced ammunition including 9×19mm Parabellum (pistol and submachine gun) and 8 mm Mauser (rifle) cartridges. The company also had a factory in Ronsdorf near Wuppertal (proofmark "ap")[1] which produced rifles. Additional Gustloff facilities were in Meiningen[1] and Weimar.[2]

Otto Eberhardt Patronenfabrik
Industrycartridge and metal fabrication
HeadquartersHirtenberg, Lower Austria, Austria
Key people
ParentGustloff-Werke - Waffenwerk Suhl
External images
Proof mark

P635 headstamp mark

8mm Mauser ammo box

Hirtenberg aircraft

Otto Eberhardt Patronenfabrik also purchased the assets of the Hopfner aircraft company in 1935. They continued production of both de Havilland- and Siemens-powered aircraft under the Hirtenberg brand. They produced the Hirtenberg HS.9 under their brand.

Unbuilt projects

From[3][4]

  • Hopfner H.A.M.11 (amphibious twin-engine aircraft based on H.A.11/33)
  • H.M.15 (six-seat, twin-engine military aircraft based on the HV.15)

References and notes
  1. "WWII German Ordnance Codes". Retrieved 2008-09-16.
  2. "Looking for info on Gustloff Werke 5.6x35RWS". German Weapons. Gun Collector Forum. Retrieved 2008-09-16. By 1938, Gustloff-Werke consisted of several factories:
    1. Fritz Sauckel Works, Weimar.
    2. Arms Works, Suhl.
    3. Otto Eberhardt Cartridge Factory, Hirtenberg, Niederdonau, Austria. (formerly Hirtenberger Patronen Züundhütchen & Metallwarenfabrik A.G.)
    4. Muselwitz Engineering Factory.
    5. Branch Office, Berlin - 'Thüringia House', responsible for overseas and government sales.
  3. https://www.secretprojects.co.uk/threads/theodor-hopfner-hirtenberg-aircraft-prototypes-and-projects.23973/
  4. https://www.secretprojects.co.uk/threads/hopfner-aircraft-austria.12039/
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