Glock 21 Gen 4 .45 Auto

Updated August 24, 2026

This Glock 21 Gen4 semi-automatic pistol is chambered in .45 Auto and combines the classic large-bore cartridge with Glock’s proven full-size polymer-frame design. Serial number AEVT490, this example features an approximately 4.5" barrel with a shiny bore and remains in good overall condition. The pistol utilizes Glock’s durable polymer frame with Gen4 grip texture and modular backstrap capability, paired with a steel slide and familiar striker-fired operating system. One magazine is included along with the original Glock hard case, adding to the completeness of the package. The Glock 21 has long been one of the company’s best-known .45 Auto pistols and earned a strong following among shooters who appreciate the substantial chambering in a modern high-capacity platform. The Gen4 configuration brought updated ergonomics while retaining the classic full-size proportions of the model. With its factory case, shiny bore, and powerful .45 Auto chambering, this is a solid Glock package. Please see photos. Glock 21 Gen 4 .45 Auto Semi 4.5 Shiny AEVT490 Good

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