The Glock 21 Gen V MOS USA in .45 ACP represents the latest evolution of Glock’s large-frame duty pistol, combining proven performance with modern upgrades tailored for today’s shooters. Built in the USA and engineered for reliability, the Glock 21 GenV MOS USA model delivers enhanced ergonomics, improved internal components, and optics-ready capability straight from the factory. Designed around Glock’s striker-fired Safe Action® system, the Glock 21 Gen V MOS USA features a redesigned trigger system, updated striker assembly, and a new trigger housing and slide cover plate. The striker itself is larger with a refined profile and slimmer lug face, while modified internal slide and frame channels reflect Glock’s updated engineering standards. These refinements enhance durability and maintain the consistent performance Glock owners expect.

One of the most noticeable ergonomic upgrades on the Glock 21 Gen V MOS USA is the removal of the finger grooves found on previous generations. The straight front strap allows a more versatile grip, accommodating a wider range of hand sizes. A slightly flared magwell and enlarged magazine floorplate promote faster, more consistent reloads ideal for duty, defense, or range use. The Glock 21 GenV MOS USA model also comes equipped with front slide serrations for improved slide manipulation and an ambidextrous slide stop lever. Combined with the reversible magazine release, this configuration offers excellent usability for both right- and left-handed shooters.

As an MOS (Modular Optic System) configuration, the Glock 21 Gen V MOS USA includes a factory-cut slide designed to accept popular red dot optics. The slide is treated with Glock’s durable nDLC finish, providing enhanced resistance to wear and corrosion. A loaded chamber indicator adds an additional visual and tactile safety feature. Accuracy is further enhanced by the Glock Marksman Barrel (GMB), featuring improved polygonal rifling and a refined crown for increased precision. Chambered in powerful .45 ACP, the Glock 21 Gen V MOS USA balances stopping power with controllability in a full-size platform. For shooters seeking a modern, optics-ready .45 ACP handgun with proven reliability, upgraded ergonomics, and American-made quality, the Glock 21 Gen V MOS USA stands out as a top-tier choice.

FEATURES

Absence of Finger Grooves, The Gen V features a straight front strap on the grip, a design choice popular for accommodating a wider variety of hand sizes.
Ambidextrous Controls, Both include an ambidextrous slide stop lever and a reversible magazine catch.
Glock Marksman Barrel (GMB), The Gen V incorporates the Gen 5 GMB, which features enhanced rifling and an improved barrel crown for increased accuracy.
Flared Magwell, A subtle flare at the bottom of the grip assists with faster, smoother reloads.
nDLC Finish, The durable nDLC (diamond-like carbon) finish on the slide provides improved resistance to corrosion and scratches.
Enhanced slide with front serrations, MOS optic cut slide for red dot sights, durable nDLC coating, and loaded chamber indicator.
Orange Follower Magazines, Magazines now come with a high-visibility orange follower.
Trigger and Internal Components, Features a modified striker and trigger housing/slide cover plate, which are incompatible with Gen 5 parts and prevent modification.
Frame and Slide Channels, Modified channels on the slide and frame to prevent modification
Striker, Larger, with a modified design and a thinner lug face.
US Manufactured Model