Sylvester Krnka

Sylvester Krnka (in Czech: Sylvestr Krnka; 29 December 1825, Velký Bor – 4 January 1903, Michle) was a Austro-Hungarian gunsmith and inventor, best known for developing the breech-loading conversion rifle adopted by the Russian army in the 19th century.

Life and career Born in Velký Bor, Bohemia, Krnka began his apprenticeship at age 13 under the Viennese gunsmith master Novotny. He established his workshop in Volyně around 1848 and later moved to Michle (now part of Prague), where he founded a factory. His son Karel Krnka also became a notable firearms designer.

Invention and adoption In 1867, Krnka developed a hinged-block breech-loading conversion for the Austrian M1857 muzzle-loading musket, chambered for the 15.24×40 mmR cartridge. The system was officially adopted by the Russian Empire in 1869 as Obr.1867 Krnka, with conversions carried out in Tula, Sestroretsk, Kiev, and Izhevsk.

Death Krnka died on 4 January 1903 in Michle, now a district of Prague.