Glock 25

The Glock 25 was introduced in 1995 by the Austrian manufacturer Glock Ges.m.b.H. It was developed as a compact derivative of the manufacturer's existing pistol line to provide an alternative for civilian markets where standard military-caliber handguns are prohibited, specifically targeting regions such as Brazil. The design process focused on adapting the established frame size of the company's compact models to an ammunition type that adheres to local legal restrictions.

The firearm utilizes a straight blowback, unlocked breech operating system, a modification from the short-recoil mechanism standard to the manufacturer’s other models. This system requires specific locking surfaces on the barrel and a redesigned locking block. In a configuration distinct from most blowback designs, the barrel is not fixed to the frame but moves rearward during the recoil cycle until tilting below the slide. The construction includes a frame made of Polymer 2, a high-strength nylon-based synthetic, and a slide milled from ordnance-grade steel. Surface protection is achieved through a nitriding process that provides resistance to wear and salt-water corrosion. The mechanism incorporates three independent, internal safety features—the trigger, firing pin, and drop safeties—which disengage sequentially as the trigger is depressed.

Adoption of the Glock 25 is concentrated in South American civilian markets, particularly Brazil, where it fulfills regulatory requirements for handgun ownership. Importation and sale of the model are restricted in the United States and Canada due to federal regulations concerning barrel length and technical specifications for foreign firearms. The subcompact Glock 28 was developed as a smaller alternative to this model, sharing the same blowback operating system and internal design revisions.