Which characteristic defines a Glock Pistol?

A Glock pistol is characterized by its mechanically locked and recoil-operated design. This means that upon firing, the energy from the fired cartridge is used to unlock the action and cycle the slide, which allows for the ejection of the spent casing and the chambering of a new round. This system enhances the reliability and rapid follow-up shots that Glock pistols are known for.

The design's mechanical locking system also contributes to the pistol’s safety features, allowing it to function safely under various operational conditions. This system provides the shooter with a simple and effective mechanism that is central to the operation of Glock pistols, distinguishing them within the range of semi-automatic handguns available.