Centennial Defense Systems MOD4 Upper Parts Kit for Gen 1-3 Glock 17 w/Button Head Allen Screw Review

First Impressions of Centennial Defense Systems MOD4 Upper Parts Kit for Gen 1-3 Glock 17 w/Button Head Allen Screw

The Centennial Defense Systems MOD4 Upper Parts Kit for Gen 1-3 Glock 17 w/Button Head Allen Screw promises an upgrade or a fresh start for a well-loved platform. The Glock 17, in its various generations, remains a staple for law enforcement, self-defense, and competitive shooting. This kit aims to provide a complete solution for the upper receiver, a critical area for performance and reliability.

My journey to this kit started with a desire to enhance my aging Gen 2 Glock 17. The original factory parts, while reliable, were showing their age and I wanted to breathe new life into it. I considered several options, including complete aftermarket slides, but the Centennial Defense Systems kit offered a more cost-effective and customizable approach.

Unboxing the kit, I was immediately struck by the clean machining and the uniformity of the parts. The stainless steel components felt solid and well-made, promising a significant upgrade over the factory MIM (Metal Injection Molding) parts. The inclusion of the button head Allen screw was a welcome touch, suggesting attention to detail and ease of installation.

Compared to similar kits from other manufacturers, the Centennial Defense Systems kit stood out due to its complete nature and the use of stainless steel. Some competing kits require piecemeal purchases, and others rely on less durable materials. I chose this kit for its comprehensive approach and the reputation of Centennial Defense Systems for quality components.

My initial impression was one of cautious optimism and I was eager to get it installed and see how it performed. The kit looked to be a fantastic value to bring new life to my existing Glock 17.

Check Best Price HERE

Real-World Testing: Putting Centennial Defense Systems MOD4 Upper Parts Kit for Gen 1-3 Glock 17 w/Button Head Allen Screw to the Test

First Use Experience

My first test was at my local outdoor shooting range, a familiar environment for evaluating Glock performance. The temperature was a mild 70 degrees Fahrenheit with a slight breeze, ideal conditions for a range day. I installed the Centennial Defense Systems MOD4 Upper Parts Kit in my Gen 2 Glock 17 in about 20 minutes using basic gunsmithing tools.

The immediate improvement was noticeable: smoother cycling and a slightly crisper trigger feel. Over the course of 200 rounds, a mix of 115-grain FMJ and 124-grain JHP ammunition, the Centennial Defense Systems kit performed flawlessly. There were zero malfunctions or hiccups.

The only surprise was how much cleaner the pistol stayed after shooting. The tighter tolerances of the stainless steel parts seemed to prevent carbon buildup and residue from accumulating as quickly as it did with the factory parts.

Extended Use & Reliability

After three months of regular use (approximately 1000 rounds), the Centennial Defense Systems kit has proven exceptionally reliable. I’ve subjected the pistol to various conditions, including a dusty outdoor match and a few training sessions in light rain. The kit continues to function without any issues.

There are minimal signs of wear and tear. The stainless steel components show no signs of corrosion or pitting, even after being exposed to moisture. Cleaning and maintenance are straightforward. A simple wipe-down with a quality gun cleaner and lubricant is all that’s required to keep the kit in top condition.

Compared to my previous experiences with factory Glock parts, the Centennial Defense Systems kit offers superior reliability and durability. The tighter tolerances and high-quality materials have noticeably improved the pistol’s performance and longevity.

Breaking Down the Features of Centennial Defense Systems MOD4 Upper Parts Kit for Gen 1-3 Glock 17 w/Button Head Allen Screw

Specifications

The Centennial Defense Systems MOD4 Upper Parts Kit for Gen 1-3 Glock 17 w/Button Head Allen Screw is specifically designed for Gen 1-3 Glock 17 pistols. The kit includes all the necessary internal components to rebuild or upgrade the upper receiver. All components are crafted from durable stainless steel.

The kit is designed to use the existing factory Glock 17 recoil spring assembly, barrel, and slide. It is compatible with standard Glock magazines. The button head Allen screw replaces the factory firing pin retaining pin, offering easier removal and installation. The stainless steel construction enhances durability and corrosion resistance.

These specifications are critical for several reasons. The Glock 17 platform is known for its reliability, and this kit aims to maintain or improve upon that reputation. The stainless steel construction ensures longevity and resistance to the elements. The inclusion of the button head Allen screw simplifies maintenance and allows for easier component replacement.

Performance & Functionality

The Centennial Defense Systems MOD4 Upper Parts Kit significantly enhances the performance and functionality of a Gen 1-3 Glock 17. The improved tolerances result in smoother cycling, reduced friction, and a more consistent trigger pull. The stainless steel components resist wear and corrosion, ensuring reliable operation over time.

The kit excels in both accuracy and reliability. My groupings tightened up slightly after installing the kit, likely due to the more consistent trigger pull. The kit’s components have proven 100% reliable through various ammunition types and shooting conditions.

One area for potential improvement is clearer installation instructions. While the installation process is relatively straightforward, a more detailed guide would benefit less experienced users. Overall, the Centennial Defense Systems kit meets and exceeds expectations, delivering a noticeable improvement in performance and reliability.

Design & Ergonomics

The Centennial Defense Systems kit is designed to seamlessly integrate with the existing Glock 17 frame and slide. The stainless steel components have a clean, professional finish that complements the overall aesthetics of the pistol. The kit does not significantly alter the weight or balance of the pistol.

The kit is user-friendly, with a straightforward installation process. The button head Allen screw simplifies disassembly and reassembly, making maintenance easier. There is no significant learning curve associated with using the kit.

Durability & Maintenance

The stainless steel construction of the Centennial Defense Systems MOD4 Upper Parts Kit ensures exceptional durability and longevity. The components are resistant to wear, corrosion, and harsh environmental conditions. With proper care and maintenance, the kit should last for many years.

Maintenance is simple and straightforward. Regular cleaning and lubrication are all that’s required to keep the kit in top condition. The button head Allen screw simplifies disassembly for more thorough cleaning and inspection.

Accessories and Customization Options

The Centennial Defense Systems MOD4 Upper Parts Kit does not come with any additional accessories beyond the included internal components. However, it is fully compatible with standard Glock 17 accessories, such as aftermarket barrels, slides, and optics. The kit is also compatible with popular accessories from brands like Trijicon, Leupold, and Agency Arms.

Pros and Cons of Centennial Defense Systems MOD4 Upper Parts Kit for Gen 1-3 Glock 17 w/Button Head Allen Screw

Check Best Price HERE

Who Should Buy Centennial Defense Systems MOD4 Upper Parts Kit for Gen 1-3 Glock 17 w/Button Head Allen Screw?

This kit is perfect for Glock owners looking to improve the reliability and longevity of their Gen 1-3 Glock 17 pistols. It is also ideal for individuals building a custom Glock from scratch or refreshing an older, well-used firearm. This is a great kit for competitive shooters who demand consistent and reliable performance.

Individuals who should skip this product are those unfamiliar with basic gunsmithing or those seeking a complete slide assembly. People looking for drop-in solutions with zero assembly may want to look elsewhere.

A must-have accessory for this kit is a quality set of gunsmithing tools, including Glock-specific punches and a non-marring hammer.

Conclusion on Centennial Defense Systems MOD4 Upper Parts Kit for Gen 1-3 Glock 17 w/Button Head Allen Screw

The Centennial Defense Systems MOD4 Upper Parts Kit for Gen 1-3 Glock 17 w/Button Head Allen Screw is a well-designed and executed upgrade for a classic firearm. The use of stainless steel and the attention to detail in the machining and construction of the parts make this kit a worthwhile investment. The $149.95 price is justified by the improved performance, reliability, and durability that the kit provides.

I would personally recommend this kit to anyone looking to enhance the performance of their Gen 1-3 Glock 17. The Centennial Defense Systems MOD4 Upper Parts Kit is a worthwhile upgrade to your existing Glock 17 or your next custom build. Invest in your Glock 17 today!