Pro Mag Glock 9MM Plus 2 / .40 S/W Plus 1 Magazine Floor Plates Review

After the Test: My Review of Pro Mag Glock 9MM Plus 2 / .40 S/W Plus 1 Magazine Floor Plates

When you’re looking to squeeze a little more capacity out of your Glock magazines, options can seem limited. The Pro Mag Glock 9MM Plus 2 / .40 S/W Plus 1 Magazine Floor Plates promise a simple, non-permanent solution to this common desire. They aim to provide an additional two rounds for 9mm Glock magazines and one round for .40 S&W variants, while also offering a bit more surface area for grip control. This was particularly appealing to me as I often find myself wanting just a few extra rounds for extended range sessions without resorting to bulky, expensive extended magazines.

My initial impression upon unboxing was typical for budget polymer accessories. The black injected-molded polymer felt… well, like injected-molded polymer. It wasn’t exceptionally robust, but for a small add-on component, it seemed adequate at first glance. I had considered other brands, like Magpul or Taran Tactical, but the Pro Mag options were significantly cheaper, making them an attractive target for a low-cost upgrade. My immediate thought was a hopeful, “This should work.”

Real-World Testing: Putting Pro Mag Glock 9MM Plus 2 / .40 S/W Plus 1 Magazine Floor Plates to the Test

First Use Experience

My testing primarily took place at my local indoor range, where I swapped out the standard floor plates on a few of my Glock 19 9mm magazines. The installation process was straightforward, requiring minimal effort to snap the new plates onto the base of the magazines. There was no need for tools or permanent modification, which was a definite plus.

During the first few magazine changes, the floor plates performed as expected, seemingly adding the promised capacity. However, a distinct quirk emerged almost immediately: the additional grip surface, while present, felt slightly less secure than I had hoped. It didn’t provide the positive purchase I’d anticipated.

Extended Use & Reliability

As I continued to use these floor plates over several range days, the real issues began to surface. The most significant problem became apparent every time I intentionally or unintentionally dropped a magazine. Instead of remaining securely attached, the Pro Mag Glock 9MM Plus 2 / .40 S/W Plus 1 Magazine Floor Plates had a distressing tendency to detach and fall apart.

This wasn’t a one-off occurrence; it happened with multiple magazines and under various conditions, from controlled drops onto the range floor to more accidental fumbles. The polymer construction, while lightweight, proved incredibly brittle under impact. After just a few weeks of moderate use, I noticed significant stress marks and even small cracks appearing on the plates. Maintenance was non-existent as they simply weren’t designed for anything beyond basic cleaning.

Breaking Down the Features of Pro Mag Glock 9MM Plus 2 / .40 S/W Plus 1 Magazine Floor Plates

Specifications

The Pro Mag Glock 9MM Plus 2 / .40 S/W Plus 1 Magazine Floor Plates are designed to convert existing Glock factory magazines. The 9mm versions add two rounds of capacity, while the .40 S/W models add one round. They are constructed from black injected-molded polymer, a material chosen for its cost-effectiveness.

These floor plates are intended to offer an additional gripping surface, theoretically providing more positive control of the pistol during magazine changes and reloads. The PM050 model, which covers both calibers, allows for the conversion of a total of two (2) magazines. Their primary specification is simplicity and added capacity at a low price point.

Performance & Functionality

The core function of adding extra rounds to a magazine is technically met, albeit inconsistently. While they can increase the round count, the reliability of keeping those extra rounds contained, let alone the entire magazine assembly intact, is severely lacking. The main job of securing the magazine basepad is compromised by their poor durability.

The primary strength is their affordability and the promise of increased capacity. However, this is drastically outweighed by their weakness in durability and security. They fall short of expectations, especially considering their intended function of reliable magazine extension.

Design & Ergonomics

The design is straightforward, aiming to mimic the general shape of factory Glock floor plates while extending slightly to accommodate the extra rounds. The black injected-molded polymer gives it a utilitarian look that blends with most Glock firearms. The added gripping surface, though, is a design element that falls flat in practice, offering minimal tactile benefit.

Ergonomically, the plates are easy enough to install. However, their actual use is marred by the insecure feel. The small size of the polymer construction, meant to be cost-effective, also contributes to a lack of substantial purchase when trying to grip them for tactical reloads.

Durability & Maintenance

Durability is, unfortunately, the Achilles’ heel of these Pro Mag floor plates. Under any sort of impact, such as dropping a magazine, they have a high propensity to shatter or come apart. This means they are not designed for any scenario where a magazine might hit the ground, which is common in competitive shooting, tactical training, or even just casual range use.

Maintenance is effectively non-existent because they are not built to withstand repeated disassembly or cleaning without risking damage. The injected-molded polymer shows wear and stress marks very quickly. Any failure points noticed are primarily related to impact resistance, making them a short-lived solution for most users.

Accessories and Customization Options

These floor plates are designed as a direct replacement for standard Glock magazine baseplates and do not come with any additional accessories. There are no customization options for these specific floor plates themselves, beyond what is presented in their basic design. They are a single, monolithic polymer piece.

Compatibility is limited to Glock factory magazines in 9mm and .40 S/W calibers. They do not offer any provisions for custom magazine extensions or other aftermarket modifications. Their simplicity means they integrate directly with the existing magazine body and spring assembly.

Pros and Cons of Pro Mag Glock 9MM Plus 2 / .40 S/W Plus 1 Magazine Floor Plates

Who Should Buy Pro Mag Glock 9MM Plus 2 / .40 S/W Plus 1 Magazine Floor Plates?

This product is suitable only for a very niche user who prioritizes an absolute lowest cost for slightly increased capacity and understands the inherent risks. It might appeal to someone looking for a very basic, non-critical range practice tool where magazine drops are highly unlikely and the consequences of failure are minimal. Perhaps for static bench rest shooting or situations where magazines are carefully handled and never dropped.

However, anyone who engages in dynamic shooting, competitive sports, defensive training, or simply wants reliable magazine extensions should avoid these floor plates. The lack of durability makes them entirely unsuitable for situations requiring consistent performance. Users looking for dependable capacity upgrades should instead consider reputable brands like Magpul, Taran Tactical, or OEM Glock extended magazines, even though they come at a higher price point. There are no must-have accessories for this product, as its core flaw lies in its fundamental construction.

Conclusion on Pro Mag Glock 9MM Plus 2 / .40 S/W Plus 1 Magazine Floor Plates

The Pro Mag Glock 9MM Plus 2 / .40 S/W Plus 1 Magazine Floor Plates offer an alluringly low price point for those seeking to increase their Glock magazine capacity. While they technically achieve this goal and are easy to install, their severe lack of durability renders them practically useless for any serious application. The promise of an extra two or one round is overshadowed by the high probability of the plate shattering upon magazine impact, leading to potential malfunctions and lost ammunition.

In terms of value, the incredibly low price is the only justification. However, the cost savings are quickly negated by the unreliability and potential for failure. I cannot personally recommend these floor plates for any application where dependable performance is required. If you absolutely must have a cheap capacity boost and guarantee your magazines will never be dropped, they might serve a minimal purpose. For everyone else, especially those considering them for defensive firearms or competitive shooting, looking at more robust and reputable alternatives is strongly advised.