Selecting a reliable, accurate full-size defensive pistol means balancing controllability, geometry, and the option to add modern sighting systems. For shooters who prioritize proven performance with room for customization, this model offers a strong blend of classic .45 ACP power and contemporary Gen5 ergonomics.

GLOCK G21 GEN 5 — Glock G21 Gen 5 .45 ACP, 4.61″ Barrel, Black, Fixed Sights, Optics Ready, 10 Round — brings the .45 AUTO into the Gen5 platform with refinements aimed at improved accuracy, ergonomics, and user adaptability. Shop this product

Performance and Accuracy Features

The GLOCK G21 GEN 5 ships with a 4.61″ barrel and fixed sights, and its optics-ready configuration lets users mount a red dot without sacrificing the low-profile sighting plane. Central to improved accuracy is the Glock Marksman Barrel (GMB) with more aggressive polygonal rifling, a target-style crown, and tighter chamber tolerances — all designed to stabilize .45 AUTO projectiles and deliver consistent groups at defensive and range distances. The Gen5 platform’s refinements also tend to reduce felt recoil, helping follow-up shots remain fast and on target.

Why .45 ACP?

.45 ACP remains a preferred caliber for many defensive shooters due to its proven terminal performance and manageable velocity in typical loads. In the GLOCK G21 GEN 5, the 4.61″ barrel helps optimize velocity without adding excess weight, making it suitable for duty, home defense, and controlled range practice.

Ergonomics, Controls, and Carry Readiness

Gen5 updates include the removal of finger grooves, ambidextrous slide stop levers, and a flared mag-well with a larger funnel for faster magazine seating. The multiple backstrap system lets users tailor grip circumference with two sizes and a beavertail to manage recoil and high-hand ergonomics. An enlarged floor plate aids magazine extraction, and the Safe Action System provides consistent trigger safety operation. The package includes three magazines, a mag loader, cleaning kit, pistol case, and a gun lock, delivering out-of-the-box readiness.

Price for this package is listed at $668.99 — a competitive figure for a full-size Gen5 MOS-capable .45 platform. View product details and pricing

Final Notes for Buyers

For shooters seeking a durable, accurate .45 ACP pistol with modern ergonomics and optics capability, the GLOCK G21 GEN 5 is a practical option. It pairs Gen5 handling improvements with the stopping characteristics of .45 AUTO and includes a complete accessory kit for immediate use. Click through to check availability and learn more — the shop page will take you to the retailer where you can complete your purchase. Check current availability

People Also Ask

What makes this product stand out from competitors?

This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.

Is this product suitable for beginners?

Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.

What warranty or support is available?

The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.

How does this compare to similar products in its price range?

This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.

What maintenance is required?

Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.