Evolution Gun Works Leupold DeltaPoint Pro Sight Mount For FN FNS, FNX Review

Worth the Money? My Take on the Evolution Gun Works Leupold DeltaPoint Pro Sight Mount For FN FNS, FNX

When the need arose to outfit my FN FNS pistol with a red dot optic, I found myself staring down the barrel of a common dilemma: how to securely and reliably mount modern sighting systems onto established firearm platforms. My search led me to the Evolution Gun Works Leupold DeltaPoint Pro Sight Mount For FN FNS, FNX. This particular adapter promised a direct replacement for the rear sight, offering a no-fuss solution for mounting popular micro-red dots. It’s crafted from 7075 Aluminum, a material known for its excellent strength-to-weight ratio, which is crucial for maintaining firearm balance. I was initially drawn to its straightforward design and the promise of a clean installation. My previous experiences with aftermarket firearm accessories have taught me to approach new parts with a blend of optimism and critical evaluation, and this mount was no different. I had considered a few other manufacturers, but EGW’s reputation for producing solid, functional firearm parts often makes them my go-to. My first impression was one of quiet satisfaction; it felt robust, well-machined, and ready for duty.

Real-World Testing: Putting Evolution Gun Works Leupold DeltaPoint Pro Sight Mount For FN FNS, FNX to the Test

First Use Experience

My testing ground for this optic mount was the familiar, albeit sometimes dusty, confines of my personal indoor range. The scenario was simple: to replace the factory rear sight on my FN FNS pistol and securely attach a Leupold DeltaPoint Pro. The installation process, as outlined by Evolution Gun Works, was relatively straightforward. I removed the rear sight, positioned the mount in the dovetail, and followed the instructions for tightening. The primary challenge I encountered immediately was the fit on my FNX, which has a pre-cut slide for optic mounting. While the mount itself is designed for FN FNS and FNX models, it appears my FNX’s factory optic cut created an unforeseen compatibility issue. The Leupold DeltaPoint Pro, with its specific footprint, seemed to be the point of contention. Specifically, the mount’s holes did not perfectly align with the threaded inserts on my FNX slide.

This mis alignment was frustrating, as it prevented the optic from sitting flush and allowed for forward shift. The overall design seemed geared more towards pistols without factory optic cuts, where the dovetail mount is the primary method of attachment. Consequently, the forward adjustment range of the DeltaPoint Pro was compromised, making proper screw installation impossible. This mount would likely perform as intended on non-optic-ready FN FNS or FNX models that rely solely on the rear sight dovetail for mounting. For those specific firearms, the installation would likely be a direct swap and tighten operation.

Extended Use & Reliability

Given the immediate mounting challenges on my specific FNX pistol, performing extended use tests became difficult. The inability to properly secure the optic meant I couldn’t subject the mount and optic combination to recoil, vibration, or environmental stresses that would typically occur during extended range sessions or defensive pistol drills. However, I did keep the mount itself fitted to the pistol’s dovetail for several weeks, observing its stability. The 7075 Aluminum construction felt solid, and there was no noticeable shift or looseness within the dovetail itself, even without the optic firmly attached. The matte black hard coat anodized finish also resisted minor scuffs during handling.

Maintenance would theoretically be simple; a quick wipe down with a cleaning cloth and perhaps a light application of oil on the dovetail interface if removed and reinstalled frequently. The biggest hurdle to long-term reliability in my specific case was the initial fitment and alignment issues. If the mount had secured the optic perfectly, I would have then proceeded to evaluate its durability through hundreds of rounds, looking for any signs of material fatigue, screw loosening, or optic zero shift. As it stands, the reliability assessment is limited to the mount’s static fitment within the dovetail.

Breaking Down the Features of Evolution Gun Works Leupold DeltaPoint Pro Sight Mount For FN FNS, FNX

Specifications

The Evolution Gun Works Leupold DeltaPoint Pro Sight Mount For FN FNS, FNX is constructed from 7075 Aluminum, a high-strength alloy commonly used in aerospace and demanding industrial applications. This material choice contributes to its perceived robustness while keeping weight to a minimum, essential for a firearm accessory. The mount boasts a matte black hard coat anodized finish, which provides excellent resistance to corrosion and wear, an important factor for firearms that may be exposed to various environmental conditions. Its dimensions are listed as 1.604 inches in length and 0.99 inches in width, designed to fit within the rear sight dovetail of compatible FN pistols.

This mount is specifically engineered to accommodate red dot sights with a Deltapoint Pro footprint, which also includes compatibility with JPoint, Redfield Accelerator, and Optima sights. Notably, the product description mentions that for Holosun 407K and 507K models, the rear pins on the mount MUST be removed by milling or filing. This highlights a potential customization need for certain optic pairings. The package includes the necessary mounting screws for attaching the red dot sight to the mount, though it’s crucial to use blue Loctite and torque them to the specified 15in/lbs for optimal security.

Performance & Functionality

In terms of its primary function – acting as a stable platform for a red dot sight – the performance of this EGW mount is heavily dependent on the specific firearm it’s installed on. For pistols that utilize the rear sight dovetail as the sole mounting point (i.e., non-optics-ready slides), it likely performs admirably. The dovetail system, when properly fitted, is a time-tested method for securing sights and other accessories. The 7075 Aluminum construction suggests it can withstand the recoil forces generated by most pistol calibers.

However, as my experience with my FNX indicated, when a pistol already possesses an optics-ready cut, this mount’s performance becomes problematic. The design, intended to replace the rear sight, does not integrate seamlessly with existing slide milling. This means that the mount, and by extension the optic, may not achieve a secure, flush fit. The alignment issues I encountered directly impacted functionality, preventing proper screw engagement and potentially leading to optic movement or damage under recoil. Therefore, its functionality is excellent for its intended purpose on specific firearm models but can be a significant hindrance on optics-ready slides designed for direct mount optics.

Design & Ergonomics

The design of the Evolution Gun Works Leupold DeltaPoint Pro Sight Mount For FN FNS, FNX is utilitarian and functional. The matte black hard coat anodized finish offers a professional, non-reflective appearance that blends well with most firearm finishes. Machining appears to be precise, with clean edges and well-defined contours, indicative of good manufacturing standards. The profile of the mount is relatively low, aiming to keep the optic as close to the bore axis as possible without interfering with the slide’s operation.

Ergonomically, the mount itself is not something you typically interact with beyond the initial installation. Its success is measured by how well it allows the user to interact with the mounted optic. In my case, the design’s limitation on optics-ready slides meant the optic sat slightly higher than ideal, and the angle created by the misalignment was not conducive to comfortable or natural sight acquisition. The inclusion of specific mounting screw torque recommendations (15in/lbs) and advice on using blue Loctite are good ergonomic and functional considerations, indicating EGW’s understanding of proper firearm accessory installation.

Durability & Maintenance

Based on the material (7075 Aluminum) and the matte black hard coat anodized finish, this mount should offer good durability for its intended use. Aluminum alloys like 7075 are known for their resilience against stress and corrosion, making them suitable for the harsh environment firearms often encounter. For pistols where it fits correctly, it should withstand regular use and recoil without significant degradation for a long time.

Maintenance is straightforward. Cleaning typically involves wiping it down with a soft cloth to remove dust, debris, or residue. If the mount is removed, a light coat of firearm lubricant on the dovetail surfaces can prevent galling and ensure smooth reinstallation. The primary concern for durability, as highlighted by my experience, is the fit. A poorly fitting mount, even if structurally sound, can lead to stress points or allow movement that compromises both the mount and the optic’s longevity. The Evolution Gun Works Leupold DeltaPoint Pro Sight Mount For FN FNS, FNX appears well-built, but its long-term survivability is contingent on achieving a perfect, snug fit within the firearm’s dovetail.

Accessories and Customization Options

The primary “accessory” that comes with this mount is the set of mounting screws required to attach the Leupold DeltaPoint Pro or compatible optic. The product also explicitly mentions the need to modify the mount for certain optics like the Holosun 407K/507K, requiring the removal of rear pins via milling or filing. This points to a degree of implicit customization, though it’s not something the average consumer can readily perform without specialized tools and skills.

Beyond this, the mount itself is a single, integrated unit designed for a specific purpose. There are no other significant customization options for the mount itself. Its compatibility is limited to the Deltapoint Pro footprint and specific FN pistol models. While it serves as a base for optics, it doesn’t offer further modularity in terms of sight height or material options. The crucial aspect is ensuring your chosen red dot optic has the correct footprint to interface properly with the mount’s design.

Pros and Cons of Evolution Gun Works Leupold DeltaPoint Pro Sight Mount For FN FNS, FNX

Who Should Buy Evolution Gun Works Leupold DeltaPoint Pro Sight Mount For FN FNS, FNX?

This mount is primarily for owners of FN FNS and FN FNX pistols that do not have a factory optics-ready slide. If your pistol’s slide requires the rear sight dovetail to be used for mounting accessories and you intend to install a Leupold DeltaPoint Pro, JPoint, Redfield Accelerator, or Optima red-dot sight, this mount is a strong contender. It offers a straightforward method to add a red dot without permanent modification to your firearm.

However, owners of FN FNX models with pre-cut optics-ready slides should avoid this mount. Attempting to use it on such firearms, as I discovered, leads to alignment problems that prevent proper optic installation and can compromise safety and functionality. Furthermore, if you are looking for a direct-fit solution for a Holosun 407K or 507K, be prepared for the additional step of modifying the mount yourself. For maximum ease of use, consider a pistol with a slide cut designed for direct optic mounting.

Conclusion on Evolution Gun Works Leupold DeltaPoint Pro Sight Mount For FN FNS, FNX

The Evolution Gun Works Leupold DeltaPoint Pro Sight Mount For FN FNS, FNX is a product that excels when used within its precise design parameters but can falter significantly when those boundaries are pushed or misunderstood. The 7075 Aluminum construction and matte black hard coat anodized finish speak to a commitment to quality and durability, fitting for firearm accessories. For FN FNS and FNX owners without factory optic cuts, it presents a cost-effective and functional solution for bringing their firearms into the world of red dot optics.

However, its failure to properly interface with optics-ready slides on models like my FNX is a critical drawback that potential buyers must be aware of. The price point of $47.99 is certainly attractive, making it an economical choice for the right application. If you own a compatible FN pistol that relies on the rear sight dovetail for mounting, I would recommend it. If your pistol already has an optics cut, I would strongly advise looking for an adapter plate or a different mounting solution designed for that specific configuration.