Although the German army's most popular submachine gun, the MP 40, was called the Schmeisser by the Allies, the gun's designer Hugo Schmeisser had nothing to do with it. The name was taken from the much earlier (and lesser-known) MP-18 pistol, designed by Schmeisser during World War I. ¹⁾

The Borchardt C93 was the world's first self-loading pistol. It was developed in the German Empire. It was produced between 1894 and 1902. It had a magazine for 8 rounds of 7.65 mm. It was produced in a quantity of 3000 pieces. ²⁾

Colt revolvers were, for many years, cap-loaded, labor-intensive, front-loading barrels. Samuel Colt made a big mistake by rejecting the idea of one of his employees, Rollin White. He proposed that the revolver barrel be drilled all the way through, allowing cartridges to be loaded from the rear and using compound ammunition, ultimately speeding up the process. The arrogant Colt, however, fired White. He took his idea to a competitor, Smith & Wesson, where it was patented, blocking the development of Colt revolvers for more than 20 years until the patent expired. ³⁾

The HK G11 is an amazingly fast-firing weapon thanks to its three-shot series. ⁴⁾

The TKB-059 (ТКБ-059) was a Soviet three-barrel assault rifle, capable of fully automatic fire, chambered for a 7.62×39 mm round, manufactured by Tula Arms Plant in 1966. It was based on the Pribor 3B (Прибор 3Б), previously an experimental assault rifle with three barrels. Both weapons were developed by small arms designer G. A. Korobov. ⁵⁾