Ownership of the Mauser Factory in Oberndorf: A Complete History

The Mauser name is often treated as one company. In Oberndorf am Neckar it was not. The site began as a royal Württemberg arsenal, passed through the Mauser brothers, a Stuttgart bank, the Loewe group, Deutsche Waffen- und Munitionsfabriken (DWM), the Quandt group, French occupation authorities, Diehl and Rheinmetall. A separate machine-tool company kept the Mauser-Werke Oberndorf name into the 2020s. Heckler & Koch rose from the same town and from former Mauser engineers, but it was a new firm, not the legal heir of the old works.

What follows tracks who owned the Oberndorf plant, not every later use of the Mauser trademark.

Ownership timeline

1. Royal arsenal, 1811–1874

On 31 July 1811 King Friedrich I of Württemberg ordered a rifle factory in the Augustinian monastery secularised five years earlier, with an iron hammer-mill attached. The works answered to the war ministry. Franz Mauser worked there as a gunsmith; his sons Wilhelm (b. 1834) and Paul (b. 1838) entered as apprentices.

The brothers designed a bolt-action infantry rifle that Prussia adopted as the M/71. They used money from a rear-sight contract to buy land above the Neckar in 1872 and open their own shop. Württemberg then wanted about 100,000 M/71 rifles of its own and made the sale of the royal plant a condition of the order. On 23 May 1874 the brothers paid 200,000 Gulden and put their name on the old state factory. The king’s title left the building; the gunsmiths’ name went on it.

German municipal and industry profiles (GN-STAT; Neue Ruhr/Rhein Zeitung; Deutsche Biographie) treat this purchase as the real birth of “Mauser Oberndorf,” not the 1811 decree.

2. Bank control, then Loewe, 1884–1896

Export orders outran the brothers’ capital. In 1884 the firm became a partnership limited by shares. Paul Mauser and Alfred Kaulla of the Württembergische Vereinsbank were general partners. Of 2,000 shares, Paul held 334; the bank held the rest.

The 1887 Ottoman contract — 500,000 rifles and 50,000 carbines — was too large for Oberndorf alone. On 28 December 1887 the Vereinsbank sold five-sixths of its block to Ludwig Loewe & Co., Berlin, for two million Mark. Paul kept a minority and stayed as technical director. Wolfgang Seel’s work on imperial arms exports and later German academic studies (van de Kerkhof; Diesen Schuss der ganzen Welt) put Isidor Loewe’s full gathering of the remaining shares around 1892. By then Paul was a well-paid employee, not the controlling owner.

Loewe already made ammunition machinery and held a large stake in Belgium’s Fabrique Nationale. Oberndorf became one plant inside a Berlin-centred combine.

3. DWM, 1896–1928

On 7 November 1896 Isidor Loewe created Deutsche Waffen- und Munitionsfabriken A.G. by merging Loewe, Deutsche Metallpatronenfabrik (Karlsruhe), the Rottweil and Rheinisch-Westfälische powder works, FN in Liège, and Mauser. On 1 January 1897 Oberndorf was recast as Waffenfabrik Mauser AG with 2 million Mark capital.

In 1915, to fund war expansion, capital was raised to 10 million Mark. DWM took the entire increase. From that point the Oberndorf works were a wholly owned DWM factory in all but local management. Paul von Mauser (ennobled 1912) died in 1914; Isidor Loewe had died in 1910. Day-to-day control passed to professional managers, above all Hermann Zillinger, who had already been in post since the imperial period.

After 1918 the Versailles Treaty barred military production. DWM renamed itself Berlin-Karlsruher Industriewerke (BERKA). Oberndorf made measuring instruments, sewing-machine parts and even automobiles. The plant survived, but as a constrained subsidiary of a shrinking combine.

4. Quandt, 1928–1945

In summer 1928 BERKA was weak and planning a capital cut. Banker Paul Hamel brought in Günther Quandt, already a BERKA shareholder through other industrial holdings (including AFA). Quandt, Hamel and allies forced a change of supervisory board and took control of BERKA — and therefore of Mauser-Werke AG.

Quandt did not live in Oberndorf. Zillinger kept operational freedom into the 1930s. From 1929 the works joined illegal Reichswehr development work (including what became the MG 34, later built at the Berlin-Wittenau branch). In 1942 Quandt himself took the Oberndorf chairmanship and displaced Zillinger.

By 1944–45 the plant was a core K98k and precision-arms site (byf, then svw 45 / svw MB). Forced labour and dispersal of work were part of that wartime regime; they belong to the factory’s history even though they were not a change of legal title.

5. French seizure and demolition, 1945–1946

U.S. troops reached Oberndorf in April 1945. The town then fell into the French zone. The factory was placed under French administration. Lines restarted in May 1945 to arm French units. Forgotten Weapons and collector studies of the svw MB code put French assembly at just under 52,000 K98k rifles through June 1946, using leftover Kriegsmodell components and continuing the c, then d, h and k serial blocks.

When the French left they treated the works as reparations. Contemporary and later accounts (Small Arms Review; van de Kerkhof’s HK/Mauser study; local reporting) agree on the same picture: a large share of the buildings demolished — figures of about half to 60 percent are cited — machinery shipped to France, and factory records destroyed. The legal Mauser-Werke AG of the Quandt era did not continue as a going arms concern on that site.

6. Two successors in one town — and they are not the same

Heckler & Koch is the firm most people now associate with Oberndorf small arms. In 1948 Edmund Heckler, Theodor Koch and Alex Seidel — all former Mauser men — salvaged leftover tooling and opened an engineering office. On 28 December 1949 it became Heckler & Koch GmbH. Early output was sewing-machine and bicycle parts. Weapons work returned only with West German rearmament (G3 from the late 1950s). HK sits on the heights above the old valley floor. It is a new company, not a renamed Mauser AG.

The Mauser name did return to Oberndorf industry under the Quandt group as measuring tools, machine building and, after Bundeswehr rearmament, heavy weapons. That revived business is the line that later sold to Diehl and Rheinmetall. It is the corporate descendant of the pre-1945 Mauser-Werke AG, not of HK.

A third “Mauser” in town history is a trap: Alfons Mauser’s sheet-metal and barrel firm (Zaunkönig, later Mauser-Werke GmbH / Mauser Waldeck) began in Oberndorf in 1896 and quickly moved to Cologne, Brühl and Waldeck. It is a different family and a different company.

7. Diehl, Rheinmetall, and the split of the name, 1979–2004

In 1979 the Quandt-owned Oberndorf works were sold to the Nuremberg group Diehl. Production shifted toward aircraft and naval cannon (later including work associated with the Eurofighter gun). German industry profiles (GN-STAT; Deutsche Biographie) treat this as the end of Mauser as a general small-arms factory.

In 1995 the military systems company became Mauser-Werke Oberndorf Waffensysteme GmbH under Rheinmetall. In 1999–2000 the sporting-rifle business was sold to Michael Lüke and Thomas Ortmeier and moved to Isny im Allgäu as Mauser Jagdwaffen GmbH. That firm still uses the Mauser name on hunting rifles; it no longer occupies the historic Oberndorf arsenal.

In 2004 the remaining military company was merged into Rheinmetall Waffe Munition GmbH. Cannon work continued in Oberndorf. Local press (Die Zeit, 2024; Land Luxembourg) still describe Rheinmetall as producing in the former Mauser works, while HK is the town’s small-arms employer on a separate campus.

8. The machine-tool company that kept the old address

Precision machine building had been a Mauser sideline since the Versailles years. That activity later stood as Mauser-Werke Oberndorf Maschinenbau GmbH, Werkstraße 35, entered in the Stuttgart register (HRB 480762) in 1994. It built automotive production lines, not rifles.

On 30 October 2020 it filed for a Schutzschirm restructuring at Amtsgericht Rottweil (8 IN 144/20). No buyer wanted the whole firm. On 26 February 2021 ALFING Kessler Sondermaschinen GmbH (Aalen) took only the service, spare-parts and rebuild business. The rest went into liquidation. The legal shell was renamed Mauser-Werke Oberndorf Maschinenbau Abwicklungsgesellschaft mbH. That is the last company to carry the old factory name at the old industrial address — and it is a winding-up vehicle, not an arms maker.

What “the Mauser factory” means now

Three things occupy the space the 1811 royal works created:

1. Rheinmetall heavy-weapons production on the historic industrial site. 2. Heckler & Koch, a post-1949 company founded by Mauser engineers, now the town’s small-arms plant. 3. Mauser Jagdwaffen in Isny — the trademark on civilian rifles, geographically and corporately detached from Oberndorf.

The ownership chain of the factory itself is therefore: Württemberg → Mauser brothers → Vereinsbank/Kaulla → Loewe → DWM/BERKA → Quandt → French occupation and demolition → Quandt revival → Diehl → Rheinmetall, with a parallel machine-tool line that ended in 2021. HK is the living small-arms successor in the same valley. It is not the same share register.

Principal sources

German institutional and local

GN-STAT plant profile Mauser-Werke Oberndorf; Deutsche Biographie (Paul von Mauser); Neue Ruhr/Rhein Zeitung town history; Schwarzwälder Bote; Die Zeit (Oberndorf 2024); Handelsregister / North Data extracts for Mauser-Werke Oberndorf Maschinenbau; ALFING/Finkenhof investor notice, Feb 2021; van de Kerkhof chapters on Mauser and on Heckler, Koch and Seidel.

German academic / book

Stefanie van de Kerkhof on Mauser-Werke and DWM/Quandt; Joachim Scholtyseck on Quandt and Zillinger; Wolfgang Seel / Diesen Schuss der ganzen Welt on the 1887 Loewe purchase; Penguin excerpt Unternehmensgeschichten der Mauser-Werke AG und HASAG.

English technical and collector

Forgotten Weapons on French svw MB production; Small Arms Review on the Waffenmuseum and post-1945 demolition; American Rifleman on HK’s founding from Mauser staff; contemporary reporting on HK’s Oberndorf site.

Forum and collector literature is most useful for 1945–46 factory codes and for distinguishing the machine-tool GmbH from the arms companies. It is weaker on 19th-century share transfers, where the German archival and biographical literature is the safer guide.