The Beretta 92 (also Beretta 96 and Beretta 98) is a series of semi-automatic pistols designed and manufactured by Beretta of Italy. The model 92 was designed in 1972 and production of many variants in different calibers continues today. The United States armed forces replaced the Model 1911A1 .45 ACP pistol in 1985 with the military spec Beretta 92F, the M9.
This model of the Beretta M92 is modeled to scale with most of the internal parts also modeled and layered out.
The Beretta 92 pistol evolved from earlier Beretta designs, most notably the M1922 and M1951. From the M1922 comes the open slide design, while the alloy frame and locking block barrel (originally from Walther P38) were first used in the M1951. The grip angle and the front sight integrated with the slide were also common to earlier Beretta pistols. Perhaps the Model 92's two most important advanced design features appeared on its immediate predecessor, the 1974 .380 caliber Model 84. These improvements both involved the magazine, which featured direct feed, that is, there was no feed ramp between the magazine and the chamber (a Beretta innovation in pistols), and the magazine was a 'double-stacked' high capacity design - a feature originally introduced in 1935 on the 9mm FN/Browning 'Hi-Power'.
The Beretta 92 first appeared in 1975 and was designed by Carlo Beretta, Giuseppe Mazzetti and Vittorio Valle, all experienced firearms designers on the Beretta design team.
Some additional notes from Wikipedia.