Dieudonné Saive

Dieudonné Joseph Saive (1889–1973) was a Belgian small arms designer who designed several well-known firearms for Belgian armsmaker Fabrique Nationale, including the FN Model 1949 and the FN FAL (Fusil Automatique Leger or Light Automatic Rifle). He is also known for modifying several of John Browning's firearms designs, including the 1931 Baby Browning and Hi Power pistol as well as the Browning .30 cal machine gun.

In 1921, the French military requested that Fabrique Nationale create a new semi-automatic nine millimetre pistol with a 15-round magazine. John Browning, who was FN's chief weapons designer, initially declined to respond to the French request because he felt standard single-row magazines holding seven or eight rounds (such as was used in his Colt's Model 1911) were sufficient. Saive, who was then Browning's assistant at FN, set to work designing a high-capacity, double-row magazine. Saive mated his experimental magazine to a modified FN Model 1903 for testing. Saive then provided the completed magazine to Browning who developed two 9mm pistol designs alternately using locked and unlocked breaches. Browning and Colt's Patent Fire Arms Manufacturing Co. submitted a U.S. patent application for the locked-breach version of the pistol on June 28, 1923. The patent was granted on February 22, 1927, four months after Browning's death at FN's plant in Liege, Belgium. Colt's elected to concentrate on manufacturing its hugely successful Model 1911 instead of either of Browning's new 9mm pistols so Browning's son, Val, offered the design to FN. This pistol design, modified after Browning's death, was offered as the 13-shot FN Browning Model 1922 or Grand Rendement. (meaning High Yield)

Following the expiration of the patents on the Model 1911, Saive redesigned the Grand Rendement to incorporate the best features of both pistols in the FN Model 1928, which still bore Browning's name. Saive traveled to Yugoslavia in 1928 to set up the state arsenal in Kraguoujevac. In 1929, Saive returned to Belgium where he oversaw the manufacture of the commercial version of the Browning Automatic Rifle. By 1930, Saive was promoted to become FN's chief weapons designer (Chef de Service). Saive improved the operating mechanism of the .30 cal. M1919 Browning M2 AN aircraft machine gun in 1932, increasing its rate of fire to 1,200 rpm. In 1938, he made additional improvements to the M2 further increasing its rate of fire to 1,500 rpm. During the same period, Saive continued to improve the Grand Rendement, and by 1934 the French term Grande Puissance ("Hi-Power") was first applied to the evolved design which became the French GP-35 self-loading pistol or FN Browning Hi-Power. The Hi-Power was the first 9 mm handgun to utilize a true staggered-column magazine. The large magazine enabled the weapon to carry a total of fourteen cartridges without an excessively oversized or protruding handgrip.

France declined to adopt the Hi-Power for its armed forces, instead using the Modèle 1935 pistol. Despite this rejection, the Hi-Power was a sales success with more than 56,000 produced by May 1940, mostly for the Belgian military. It was used extensively in World War II by many nations including the British Commonwealth and Chinese forces. More than 65,000 Hi-Power pistols were also used by German forces, renamed Pistole 640(b), after the Nazis captured FN's manufacturing plant in Liege, Belgium on May 12, 1940. Saive fled the German invasion, eventually arriving in London in mid-1941. He was soon at work at the Enfield Design Department at the Drill Hall in Cheshunt, England, recreating production drawings for the Hi-Power and further developing his design for a gas-operated rifle called the EXP-1, later the FN Model 1949. By June 1943, the British modified Saive's technical drawings to produce the Mk. I U.K. model of the Hi-Power. After the war, the Browning Hi-Power was adopted as the standard military service sidearm of many Western countries, including the United Kingdom and Australia. Modern versions remain in production today, three-quarters of a century later.

Saive's Gas-Operated Rifle Designs

Saive is most famous for his series of gas-operated self-loading rifle designs, which used a tipping bolt to lock the action. His FN-49 rifle went into production, and was later developed into the widely successful FN FAL selective-fire battle rifle.