The Glock Safe Action Pistol, colloquially known as the Glock is a series of semi-automatic pistols designed and produced by Glock Ges.m.b.H., located in Deutsch-Wagram, Austria.

The company's founder, engineer Gaston Glock, had no experience with firearms design or manufacture at the time their first pistol, the Glock 17, was being prototyped. Glock did, however, have extensive experience in advanced synthetic polymers, knowledge of which was instrumental in the company's design of the first successful line of pistols with a polymer frame. Glock also introduced ferritic nitrocarburizing into the firearms industry as an anti-corrosion surface treatment for metal gun parts.

Despite initial resistance from the market to accept a "plastic gun" due to concerns about their durability and reliability, Glock pistols have become the company's most profitable line of products, commanding 65% of the market share of handguns for United States law enforcement agencies as well as supplying numerous national armed forces and security agencies worldwide.

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