Glock 21 Gen5 MOS .45 ACP

The Glock 21 Gen5 MOS is designed as a full-size, duty-capable semi-automatic handgun suitable for personal defense and range training. Its Gen5 refinements and optics-ready slide make it appropriate for shooters who want a durable service pistol with modern sighting options.

The pistol pairs a polymer frame with a steel Glock Marksman Barrel (GMB) and a black nDLC finish for corrosion resistance and wear protection. Ergonomic updates include the Gen5 rough textured frame, interchangeable backstraps, and an enlarged floor plate to ease magazine removal; the slide features front serrations and a serrated profile for positive manipulation.

Key Specifications

• The caliber is .45 ACP.
• The action type is Semi-Auto.
• The barrel length is 4.6 inches, providing a balance between controllability and ballistic performance.
• The frame material is Polymer.
• The finish is Black nDLC.
• The optic footprint is Proprietary slide cut (Modular Optic System).
• The pistol includes 3 x 10-round magazines.
• The number of magazines included is 3.
• The series is Gen5 MOS.
• The sights are Fixed.

State Restrictions: This firearm is not available for sale in California.

With optics readiness, the Glock Marksman Barrel, and a durable polymer frame, the Glock 21 Gen5 MOS is a practical choice for shooters seeking a modern .45 ACP pistol. Buy the Glock 21 .45 ACP online today to secure a service-quality, optics-capable handgun that includes three magazines and standard accessories.

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