The full-size .40 S&W variant. It features a 4.5-inch barrel and a standard magazine capacity of 15 rounds. It is the same in overall size as the Glock 17 and was first introduced in 1990 under a Generation 1 model.
The Glock 22 effectively closed the gap between the heavy .45 Auto, and the internationally proven 9x19. Glock was the first manufacturer to make this popular and effective round accessible for law enforcement agencies. Today, police agencies across the U.S. and countless others throughout the world put their trust in the Glock 22, as evident in Live Free or Die Hard.
The third generation Glock 17 was used by FBI Cyber-Security director (or Deputy Director) Miguel Bowman and some of the police officers in Washington DC. It was also used by McClane when he took one from one of Thomas Gabriel's henchmen in the Eastern Power Hub and used it to kill him, after shooting him in the foot through his holster and then repeatedly in the chest.
Actually, when McClane shot the henchman through his holster, the gun wouldn't have fired because the trigger was back, indicating that there was not a round in the chamber.