Archduke Franz Ferdinand of Austria, whose assassination triggered the events leading to World War I, was shot with a Browning Model 1910 semi-automatic pistol chambered in .380 ACP (Automatic Colt Pistol) caliber. The assassin, Gavrilo Princip, fired the fatal shots on June 28, 1914, in Sarajevo, Bosnia, which was then part of the Austro-Hungarian Empire.

The Browning Model 1910, designed by American firearms inventor John Browning, was a popular and widely used handgun of its time. It was a compact, semi-automatic pistol known for its reliability and ease of use. The .380 ACP cartridge used in the pistol was one of several calibers available for the Browning Model 1910.

The assassination of Archduke Franz Ferdinand and his wife, Sophie, Duchess of Hohenberg, played a pivotal role in the complex web of events and alliances that led to the outbreak of World War I.