Piotr Wilniewczyc (1887–1960) was a Polish engineer and arms designer. Among his most successful designs were the Vis-35 pistol, commonly known as the Radom for the arsenal in which it was produced, and the

Mors Mors may refer to: *Mors (mythology), the personification of death in Roman mythology *Mors, Latin for death *Mors (automobile), a French car manufacturer from 1895 to 1925 :* American Mors, Mors vehicles produced under licence in America by the S ...

submachine gun A submachine gun (SMG) is a magazine (firearms), magazine-fed automatic firearm, automatic carbine designed to fire handgun cartridges. The term "submachine gun" was coined by John T. Thompson, the inventor of the Thompson submachine gun, to descri ...

Biography

Piotr Wilniewczyc was born on 31 January 1887 near

Irkutsk Irkutsk ( ; rus, Иркутск, p=ɪrˈkutsk; Buryat language, Buryat and , ''Erhüü'', ) is the largest city and administrative center of Irkutsk Oblast, Russia. With a population of 587,891 Irkutsk is the List of cities and towns in Russ ...

Siberia Siberia ( ; , ) is an extensive geographical region comprising all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has formed a part of the sovereign territory of Russia and its predecessor states ...

. He grew up in

Vilna Vilnius ( , ) is the capital of and List of cities in Lithuania#Cities, largest city in Lithuania and the List of cities in the Baltic states by population, most-populous city in the Baltic states. The city's estimated January 2025 population w ...

(now Vilnius, Lithuania). In 1905 he moved to

Saint Petersburg Saint Petersburg, formerly known as Petrograd and later Leningrad, is the List of cities and towns in Russia by population, second-largest city in Russia after Moscow. It is situated on the Neva, River Neva, at the head of the Gulf of Finland ...

Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...

, and studied at the

University of St. Petersburg Saint Petersburg State University (SPBGU; ) is a public research university in Saint Petersburg, Russia, and one of the oldest and most prestigious universities in Russia. Founded in 1724 by a decree of Peter the Great, the university from the be ...

institute of mathematics and physics. He continued his studies in the

Lwów Polytechnic Lviv Polytechnic National University () is a public university in Lviv, Ukraine, founded in 1816. According to the Times Higher Education, as of 2024, it ranks first as a technical institution of higher education and second among all instit ...

department of chemistry. In 1915 Wilniewczyc also graduated from artillery school in St. Petersburg. In 1921 he accepted employment at the Boryszew Gunpowder Factory near

Sochaczew Sochaczew () is a town in central Poland, with 33,456 inhabitants (as of 2023). In the Masovian Voivodeship (since 1999), formerly in Skierniewice Voivodeship (1975–1998). It is the capital of Sochaczew County and is located approximately west ...

, Poland. From 1924 to 1928, Wilniewczyc also lectured at the Artillery Officers' School in

Toruń Toruń is a city on the Vistula River in north-central Poland and a World Heritage Sites of Poland, UNESCO World Heritage Site. Its population was 196,935 as of December 2021. Previously, it was the capital of the Toruń Voivodeship (1975–199 ...

. In 1928 he began work as director of the ballistics department at the State Arms Factories (''Państwowe Wytwórnie Uzbrojenia''), holding this post until war broke out in September 1939. His most successful project was the Vis-35 pistol, a standard Polish prewar military pistol. He also designed the

, which did not enter production due to the outbreak of war. After the war, he directed a team that designed the Rak wz. 63 submachine gun, completed after his death. During the war, Wilniewczyc worked with the

Home Army The Home Army (, ; abbreviated AK) was the dominant resistance movement in German-occupied Poland during World War II. The Home Army was formed in February 1942 from the earlier Związek Walki Zbrojnej (Armed Resistance) established in the ...

Warsaw Warsaw, officially the Capital City of Warsaw, is the capital and List of cities and towns in Poland, largest city of Poland. The metropolis stands on the Vistula, River Vistula in east-central Poland. Its population is officially estimated at ...

, developing a silencer for the

Sten The STEN (or Sten gun) is a British submachine gun chambered in 9×19mm which was used extensively by British and Commonwealth forces throughout World War II and during the Korean War. The Sten paired a simple design with a low production co ...

gun. After the

Warsaw Uprising The Warsaw Uprising (; ), sometimes referred to as the August Uprising (), or the Battle of Warsaw, was a major World War II operation by the Polish resistance movement in World War II, Polish underground resistance to liberate Warsaw from ...

he moved to

Łódź Łódź is a city in central Poland and a former industrial centre. It is the capital of Łódź Voivodeship, and is located south-west of Warsaw. Łódź has a population of 655,279, making it the country's List of cities and towns in Polan ...

and soon began lecturing at the Łódź Polytechnic. From 1948 he also worked at the reopened

Warsaw Polytechnic The Warsaw University of Technology () is one of the leading institutes of technology in Poland and one of the largest in Central Europe. It employs 2,453 teaching faculty, with 357 professors (including 145 titular professors). The student body ...

. Wilniewczyc died on 23 December 1960 and was interred at Warsaw's

Powązki Cemetery Powązki Cemetery (; ), also known as Stare Powązki (), is a historic necropolis located in Wola district, in the western part of Warsaw, Poland. It is the most famous cemetery in the city and one of the oldest, having been established in 179 ...

References

1887 births 1960 deaths Lviv Polytechnic alumni Firearm designers 20th-century Polish engineers Burials at Powązki Cemetery {{Poland-engineer-stub