The Legacy of the Glock 21
The Glock 21 is a heavyweight champion in the world of firearms, a pistol renowned for its robust reliability and potent stopping power. Chambered in the formidable .45 ACP caliber, this large-frame Glock has become a favorite among law enforcement professionals, military personnel, and civilian shooters alike. But when it comes to choosing the perfect Glock 21 for your needs, a key decision arises: which generation reigns supreme? The Glock 21 Gen 4 and Gen 5 represent pivotal evolutions in the firearm’s design. This detailed comparison delves into the core features of each generation, equipping you with the knowledge to make an informed decision.
Before we examine the contrasting features of the Gen 4 and Gen 5, it is helpful to understand the origins of this renowned pistol. Glock, a name synonymous with innovation and polymer-framed firearms, burst onto the scene, forever changing the handgun landscape. The Glock 21, built upon the principles of simplicity, durability, and ease of use, expanded the brand’s dominance by delivering the power of the .45 ACP in a reliable platform. The Glock 21 quickly established itself as a workhorse, capable of handling various environmental conditions and resisting wear and tear. As the Glock design evolved through successive generations, it was clear that the Glock 21 would evolve as well.
Grip and Handling: A Matter of Feel
The most immediate difference you’ll encounter when comparing the Glock 21 Gen 4 and Gen 5 lies in the grip and frame. These are critical elements in how a firearm feels and handles in the hand. The Gen 4 initially sported the signature Glock Rough Textured Frame (RTF), a series of small raised bumps across the frame. The Gen 4 offered the option to customize the grip via interchangeable backstraps. These backstraps attach to the frame to alter the grip’s circumference, allowing the shooter to fine-tune the ergonomics. These backstraps varied in size, allowing shooters with different hand sizes to optimize the fit. This feature was certainly welcomed by many shooters.
The Gen 5 introduced significant modifications in this area. The most striking change is the absence of finger grooves. Glock removed these ridges which many shooters did not like. The Gen 5 also adopted a new frame texture. This newer texture is more aggressive, providing a surer purchase even when wet. The elimination of interchangeable backstraps marks another distinction. While some shooters appreciate the simplicity of the Gen 5’s fixed design, others may miss the ability to customize the grip dimensions to achieve an exact fit. The newer texture is a significant upgrade for handling, making the Gen 5 easier to control in rapid-fire situations.
Trigger Mechanism: The Heart of Performance
The trigger mechanism is one of the most vital components, as this plays a direct role in precision and consistency. The Gen 4 employed the standard Glock trigger mechanism. The trigger pull is known for its safety mechanism, and consistent pull weight. However, the Gen 5 boasts advancements in its trigger mechanism that deserve closer inspection.
The Gen 5 incorporated the Glock Marksman Barrel (GMB). This barrel is the result of a dedicated focus on accuracy. The GMB offers a tighter fit and improved rifling. The Gen 5 trigger itself has been tweaked and refined. Many shooters report a smoother pull and a more tactile reset than the Gen 4’s trigger. The ambidextrous slide stop lever is another improvement. This feature gives a shooter the ability to operate the slide from either side of the pistol. These enhancements elevate the overall shooting experience.
Slide and Finish: Durability and Aesthetics
The slide, the heart of the action, also demonstrates important differences between the Gen 4 and Gen 5 Glock 21. The Gen 4 slides generally employed a black finish, typically a Tenifer coating. While the Gen 4’s finish is reasonably durable and capable of protecting the slide from corrosion, the Gen 5 takes it up a notch.
The Gen 5 sports a nDLC (diamond-like carbon) finish. This coating is more resistant to wear and tear, scratches, and corrosion. This provides protection during frequent use. Beyond functionality, the Gen 5 also features front slide serrations. These serrations provide extra grip for manipulating the slide. The Gen 5 upgrades are focused on ensuring longevity and easier handling.
The Barrel’s Impact on Precision
As mentioned earlier, the Glock Marksman Barrel (GMB) is a prominent feature of the Gen 5. While the Gen 4 utilizes a standard Glock barrel, the GMB offers several advantages. The GMB has more precise rifling, resulting in tighter groupings on the target. The improved lockup of the barrel and slide helps maintain greater accuracy during firing. For those seeking to maximize the potential of the .45 ACP round, the GMB is certainly a noteworthy upgrade.
Magazine Release: User-Friendliness
The magazine release, a seemingly small element, contributes significantly to user experience. The Gen 4’s magazine release is reversible, catering to both right- and left-handed shooters. The Gen 5 takes user-friendliness a step further, with an extended and ambidextrous magazine release. This feature allows for easier access and operation.
Accuracy and Performance in the Real World
The Glock 21, in both its Gen 4 and Gen 5 incarnations, is known for its reliability and straightforward design. Both models typically deliver consistent accuracy, making them suitable for self-defense and sport shooting. The trigger pull and barrel are major contributors to accuracy. The Gen 5 trigger and barrel give it an edge. However, external factors such as ammunition, practice, and the shooter’s skill are just as relevant.
The Pros and Cons of Each Generation
Here’s a clear breakdown of the advantages and disadvantages of both generations. This allows you to align your choices to your priorities.
Gen 4
Pros:
- Potentially lower price point, as these are older models.
- Extensive availability of aftermarket parts.
- A reliable track record, with many years of proven service.
- Interchangeable backstraps, providing customization options.
Cons:
- An older design, meaning some of the technological advances found in the Gen 5 are missing.
- The finger grooves may not be comfortable for all shooters.
- The standard finish may not be as wear-resistant as the nDLC coating.
Gen 5
Pros:
- The improved grip and texture provide enhanced control.
- The enhanced trigger mechanism offers a smoother pull and reset.
- The more durable nDLC finish protects the slide better.
- The enhanced accuracy potential, attributed to the GMB and trigger improvements.
- The ambidextrous slide stop lever is a user-friendly feature.
Cons:
- The price point may be higher.
- You might need to find new holsters.
- Some aftermarket parts may be limited initially, until the market catches up.
Making the Right Choice: Which Glock 21 is Best for You?
Choosing between the Glock 21 Gen 4 and Gen 5 hinges on a careful evaluation of your shooting needs and preferences.
If you prioritize affordability and a wide selection of aftermarket accessories, the Gen 4 could be a good option. If you are looking for a pistol that balances cost with an excellent shooting experience, the Gen 4 may fit your needs.
If you value a better trigger, a more aggressive grip texture, and a robust finish, the Gen 5 is the better choice. The GMB in the Gen 5 will increase the likelihood of getting the bullet on target.
For left-handed shooters, the ambidextrous controls of the Gen 5 make it a compelling option.
Ultimately, the best way to decide is to handle and, if possible, shoot both generations. This hands-on experience will help you determine which model feels most comfortable and performs to your standards.
In Conclusion: Power and Reliability
Both the Glock 21 Gen 4 and Gen 5 represent the pinnacle of firearm innovation. The Gen 5 builds upon the legacy of the Gen 4, with refinements that enhance control, accuracy, and durability. Whether you choose the Gen 4, a reliable veteran, or the Gen 5, the evolution of the Glock 21 is a success. Both models offer the legendary Glock reliability, making either choice a solid investment. The decision depends on your individual preferences and needs.
The choice between the Glock 21 Gen 4 and Gen 5 is a matter of personal preference and budget. Both are excellent firearms. Whatever you choose, you can be sure that you will receive a top-notch pistol.
