FNX Sights

FNX Sights (FNX-45, FNX-9, FNX-40): Night, Suppressor-Height, Fiber Optic

Better sights change how your FNX runs. Faster pick up, cleaner edges, confidence in low light. This collection brings together proven options for FNX-series pistols, including tritium night sights, fiber optic sets, and suppressor-height “tall” sights that co-witness with popular red dots. Pick your goal—carry, competition, or a threaded-barrel build—and match the height, material, and profile that fits how you shoot.

Shop by goal

• Everyday carry / defensive: Tritium night sights, anti-glare rear notch, snag-resistant profiles.

• Red dot co-witness: Suppressor-height sets sized for RMR, SRO, and Holosun footprints on optics-ready slides or plate systems.

• Competition / range: Bright fiber optic front with blacked-out rear, wider rear notch for daylight on the front blade.

• Threaded builds: Tall sights that clear common suppressor diameters and compensators.

What fits the FNX platform

• Models: FNX-45 Tactical, FNX-45, FNX-9, FNX-40 (verify model selection on the product page).

• Fronts, rears, or matched sets: Swap the full set for true POA/POI alignment or pair a new front with your current rear if heights match.

• Heights: Standard height for irons-only, suppressor-height for dot co-witness and can clearance.

• Materials & finishes: Steel bodies, durable finishes, tritium vials with sealed windows, crisp FO rods in green or red.

How to choose the right FNX sights

• Shooting context: Night sights for defensive use, fiber optic for daylight speed, black rear for precision.