How many gun designers in the history of the planet have had, say, five completely different, commercially successful weapons to their credit?
The answer is "one".
Single-shot rifles: Winchester 1885 "High Wall".
Lever-action rifles: Winchester 1886, Winchester 1892, Winchester 1894, Winchester 1895.
Recoil-operated autoloading rifles: Remington Model 8.
Gas-operated autoloading rifles: U.S. M1918 "BAR".
Over & Under shotguns: Browning Superposed.
Lever-action shotguns: Winchester 1887.
Pump-action shotguns: Winchester 1897, Remington Model 17/Ithaca Model 37.
Recoil-operated autoloading shotguns: Browning Auto-5/Remington Model 11.
Straight-blowback autoloading pistols: FN 1900, 1906, 1910 and Colt 1903 & Woodsman.
Short-recoil autoloading pistols: Colt M1911.
Gas-operated machineguns: Colt M1895.
Recoil-operated machineguns: U.S. M1917 and M2.
The man was John Moses Browning. Eighty-five years ago today he died. Eighty-five years after his death, the most elite counterterrorist groups in the U.S.A. are still using his pistols, and the most advanced main battle tank in the world still has a machinegun he designed over ninety years ago mounted above the commander's hatch.
It would not be an exaggeration to divide the world of metallic cartridge firearms to the periods "Before Browning" and "After Browning". This is the guy who invented the slide on the automatic pistol.
Eighty-five years gone, and still a genius.