The Glock 23 can be converted easily from .40 S&W to 9mm, but the Glock 19 not so much (it’s possible to convert it to .40 S&W but it’ll be way more difficult).

Tags: 9mm, Glock 19, Glock 23, Pistols, and Service Pistol. ... The Glock 23 measures smaller and lighter than the Glock 22, which uses the same .40 caliber rounds in a larger frame and magazine.

The Smyrna, Georgia-based company submitted versions of its 9mm Glock 19 and .40 caliber Glock 23 pistols in the Army's effort to replace its M9 9mm pistol.

The United States Secret Service is moving forward with plans to outfit its agents with Glock 9 millimeter (mm) pistols to replace the agency's existing Sig Sauer .357-caliber duty weapons -- part ...

The Smyrna, Georgia-based company submitted versions of its 9mm Glock 19 and .40 caliber Glock 23 pistols in the Army's effort to replace its M9 9mm pistol.. But in early January, Sig Sauer beat ...

The Ministry of Defence has signed a £9m contract to provide the Armed Forces with more than 25,000 new side-arms and holsters from Austria's Glock. It will replace the Browning 9mm pistol which ...