John Moses Browning died of heart failure on November 26, 1926, in Liège, Belgium, while working on a self-loading pistol design for Fabrique Nationale de Herstal (FN). His death marks the end of an era in firearms design, as he remained actively involved in innovation until his last day. The pistol he was working on, eventually completed as the Browning Hi-Power, became one of his most successful designs.

John Moses Browning began a two-year mission in Georgia for The Church of Jesus Christ of Latter-day Saints on March 28, 1887. This demonstrates his religious commitment and involvement in missionary work.