The Glock 22 is a pistol manufactured by Glock. It is a Glock 17 modified to fire .40 S&W ammunition. It uses a modified slide, frame, .40 S&W barrel and magazine but is otherwise near identical in looks to the Glock 17. It has a 10, 15, or 17 round magazine capacity.
The Glock 22 has undergone three major revisions since its introduction in 1990 and current models are called 3rd generation Glock 22s. The Glock 22C is a version of the Glock 22 that has a ported barrel and slide to reduce muzzle climb while shooting the pistol.
The Glock 22 is one of the most popular law enforcement pistols in the United States.