Hi VIZ Interchangeable Front Sight, FNS 9, 40, 45, FNX 9, 40, 45

• Interchangeable LitePipe front sight: The front sight uses HIVIZ’s replaceable fiber-optic LitePipe system, giving a brighter, easier-to-pick-up aiming point and allowing the sight picture to be tailored to lighting conditions or shooter preference.
• Steel construction: A steel sight body stands up better to daily carry, repeated holstering, and range use than softer materials, helping the sight keep its shape and zero over time.
• Fixed front sight format: The fixed design keeps the setup simple and durable, making it well suited to defensive pistols and general range use where reliability matters more than adjustment complexity.
• Green fiber-optic aiming point: The green front dot draws the eye quickly in daylight, helping shooters acquire the front sight faster for quicker alignment on close and mid-range handgun targets.
• FN-specific fit: This model is made for FNS 9, FNS 40, FNS 45, FNX 9, FNX 40, and FNX 45 variants, giving owners of these pistols a dedicated front-sight upgrade rather than a generic one-size-fits-all part.

About the Hi Viz Interchangeable Sight Series

The Hi Viz Interchangeable Sight series sits within HIVIZ’s Original Sights family and focuses on a simple idea: a durable sight body paired with interchangeable LitePipes that can be removed, replaced, and reused. That makes the series especially practical for shooters who want a brighter front sight than a plain black blade, but also want the flexibility to change the sight color as conditions change. In bright daylight, overcast weather, or indoor range lighting, that ability to tune the sight picture can make the front sight easier to track.

Within the range, HIVIZ offers platform-specific versions for popular handguns as well as other firearm types, so the series is built around fit and function rather than a universal compromise. The design is aimed at everyday shooters and competitive shooters who want faster front-sight acquisition without moving to a more complex electronic sighting system. Across the series, the emphasis stays on fiber-optic visibility, straightforward installation, and a robust construction suited to regular carry and range use. For shooters who prefer iron sights but want a more visible aiming reference, this family provides a practical upgrade path.

About the Hi VIZ Interchangeable Front Sight, FNS 9, 40, 45, FNX 9, 40, 45

The Hi VIZ Interchangeable Front Sight, FNS 9, 40, 45, FNX 9, 40, 45 is a dedicated handgun front sight for FN pistols that replaces the standard front blade with a more visible green fiber-optic sight picture. On defensive pistols and range handguns alike, the front sight is the part the eye needs to find first. A bright fiber-optic insert helps the shooter pick up that reference point faster, which can make sight alignment feel more immediate during drills, practice, and general target work.

This model uses HIVIZ’s interchangeable LitePipe concept, so the front sight is not locked into a single permanent insert arrangement. That matters for shooters who want to keep the same steel sight body but adapt the visual presentation over time. The sight itself is fixed, which keeps the setup rugged and uncomplicated, and its steel construction supports long-term durability on working pistols that see repeated recoil, holster wear, and handling.

For practical use, the 3-dot alignment style works with compatible rear sights to preserve a familiar sight picture, while the black sight body keeps visual clutter down and lets the green front element stand out. At only 10.00 g, the sight adds almost no noticeable weight to the slide. For owners of compatible FN FNS and FNX pistols who want a clearer front sight without changing the basic handling of the handgun, this model offers a straightforward fiber-optic upgrade.

About HiViz

HiViz began in 1996 with a single shooting-related product and grew into a specialist maker of sights and shooting accessories based in Laramie, Wyoming, United States. The company focuses on sighting systems for handguns, shotguns, and rifles, with product lines that include fiber-optic sights, tritium sights, recoil pads, and related accessories.

A defining part of the brand’s approach is its use of removable and reusable LitePipes, which allow shooters to change or replace fiber-optic elements rather than treating them as fixed components. HiViz has also developed product families such as LiteWave, including LiteWave H3 sights that combine tritium with fiber-optic LitePipes. That background makes the company particularly relevant in the handgun sight category, where shooters often want a brighter sight picture while keeping the simplicity and durability of iron sights.

Main Features

• Manufacturer: HiViz
• Series: Hi Viz Interchangeable Sight
• Made in: USA
• Weight: 10.00 g
• Material: Steel
• Sight Type: Fiber Optic Sights
• Self illuminated: No
• Sight adjustment: Fixed
• Alignment Type: 3 dot
• Sight color: Green
• Color: Black

Warranty

1 year. This HiViz front sight is covered by a one-year warranty, making it a practical option for shooters who want a dedicated fiber-optic front-sight upgrade for compatible FN pistols.