Night Fision167521990
Night Fision Sight Set Orange Front Square Notch Rear For Fn 509$97.20
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Availability: In Stock
Night Fision's yellow front sight and square notch rear sight set gives your FN 509 a combat-proven night sight solution engineered for serious shooters. These sights use Swiss-made tritium that glows consistently in low light without batteries or external power, making them ideal for defensive carry, home protection, or tactical training where reliable target acquisition matters. Night Fision's design carries more tritium per vial than typical night sights on the market, paired with a domed lens that focuses the glow into a sharp, defined sight picture rather than a dim haze.
Built from CNC-machined steel and treated with black nitride coating, these sights handle hard use and resist corrosion from daily carry or training abuse. The injection-molded sleeve design locks the tritium vials firmly in place so they won't shift or rattle under recoil. The yellow front sight contrasts well against most backgrounds in daylight while the tritium core takes over when the sun goes down—a smart two-mode approach that keeps your sight picture fast across conditions. Installation is straightforward enough for a gunsmith, though some experienced shooters handle the swap themselves.
Whether you're upgrading from factory plastic sights or replacing worn tritium, this Night Fision set gives your FN 509 the low-light capability that defensive shooters expect and the durability that outranks mall-grade alternatives. Made in the USA with international tritium quality, these sights earn their reputation among people who trust their carry gun in the dark.
| Sight Type | Night Sights (Tritium) |
| Front Sight Color | Yellow |
| Rear Sight Style | Square Notch |
| Material | CNC-Machined Steel |
| Finish | Black Nitride |
| Tritium Source | Swiss |
| Designed For | FN 509 |
| Manufacture | USA |
Yes—this is a dedicated sight set cut specifically for the FN 509 platform.
Night Fision sights carry more tritium per vial than average night sights on the market, and the domed lens design focuses that glow into a sharper, more defined sight picture. That combination delivers noticeably better low-light visibility than thinner or flat-lens designs.
Gunsmith installation is recommended. While experienced shooters can perform the swap themselves, professional installation ensures proper fit and function.
The front sight has a yellow component for daytime contrast and visibility. The tritium element within glows in low light, but the primary benefit of the yellow front is daytime aiming clarity—the rear sight with its tritium vial handles the night glow.
SKU: 167522908 • Width: 4.5in • Height: 0.75in • Depth: 7.25in • Weight: 0.065oz
Availability: In Stock
Night Fision's yellow front sight and square notch rear sight set gives your FN 509 a combat-proven night sight solution engineered for serious shooters. These sights use Swiss-made tritium that glows consistently in low light without batteries or external power, making them ideal for defensive carry, home protection, or tactical training where reliable target acquisition matters. Night Fision's design carries more tritium per vial than typical night sights on the market, paired with a domed lens that focuses the glow into a sharp, defined sight picture rather than a dim haze.
Built from CNC-machined steel and treated with black nitride coating, these sights handle hard use and resist corrosion from daily carry or training abuse. The injection-molded sleeve design locks the tritium vials firmly in place so they won't shift or rattle under recoil. The yellow front sight contrasts well against most backgrounds in daylight while the tritium core takes over when the sun goes down—a smart two-mode approach that keeps your sight picture fast across conditions. Installation is straightforward enough for a gunsmith, though some experienced shooters handle the swap themselves.
Whether you're upgrading from factory plastic sights or replacing worn tritium, this Night Fision set gives your FN 509 the low-light capability that defensive shooters expect and the durability that outranks mall-grade alternatives. Made in the USA with international tritium quality, these sights earn their reputation among people who trust their carry gun in the dark.
| Sight Type | Night Sights (Tritium) |
| Front Sight Color | Yellow |
| Rear Sight Style | Square Notch |
| Material | CNC-Machined Steel |
| Finish | Black Nitride |
| Tritium Source | Swiss |
| Designed For | FN 509 |
| Manufacture | USA |
Yes—this is a dedicated sight set cut specifically for the FN 509 platform.
Night Fision sights carry more tritium per vial than average night sights on the market, and the domed lens design focuses that glow into a sharper, more defined sight picture. That combination delivers noticeably better low-light visibility than thinner or flat-lens designs.
Gunsmith installation is recommended. While experienced shooters can perform the swap themselves, professional installation ensures proper fit and function.
The front sight has a yellow component for daytime contrast and visibility. The tritium element within glows in low light, but the primary benefit of the yellow front is daytime aiming clarity—the rear sight with its tritium vial handles the night glow.
SKU: 167522908 • Width: 4.5in • Height: 0.75in • Depth: 7.25in • Weight: 0.065oz