Glock 18

The Glock 18 is a selective-fire (which means it can fire either semi-automatic or full automatic mode), polymer-framed 9x19mm Parabellum pistol. It is based on the Glock 17, but unlike the Glock 17, it can fire in full automatic mode. It normally holds 33-round box magazines and it fires 1,200 rounds per minute. In other words, the gun fires so quickly that it is impossible to fire single shots when in full automatic mode. While it is light enough to fire with one hand, it is not a good idea because its fast rate of fire makes the gun kick back a lot.

Glock 18 Media

A "first-generation" Glock 17 with the slide locked back displaying its vertical barrel tilt
A "second-generation" Glock 17, identified by the checkering on the front and rear straps of the pistol grip and trigger guard
A "third-generation" Glock 17C, identified by the addition of an extra cross pin above the trigger, finger grooves, a reshaped extractor that serves as a loaded chamber indicator, and an accessory rail
A "fourth-generation" Glock 17, identified by an enlarged and reversible magazine release catch, modified rough texture frame grip checkering, interchangeable backstraps, and a "Gen4" rollmark on the slide
A "fourth-generation" Glock 19
A "fifth generation" Glock 17 Gen 5 FR used by a French soldier
A subcompact Glock 30 field stripped to its main groups with a .45 ACP round
A Glock 9×19mm Parabellum 17-round magazine. The numbered witness holes at the back portion visually indicate how many cartridges are contained in the magazine.
Standard sighting arrangement of a "first-generation" Glock 17
Man firing a fully automatic 9×19mm Glock 18 machine pistol with a shoulder stock