Night Fision Night Sight Set Yellow Front Square Notch Rear for FN 509

Low-light shooting demands sights that cut through darkness without battery dependence. This yellow front sight paired with a square notch rear delivers fast target acquisition when ambient light drops. Whether you're training in Pittsburg or handling defensive scenarios, Night Fision's design prioritizes speed and clarity. TacticCAL Gun Store handles FFL transfer in Sunnyvale for all optic upgrades and sight installations.

Tritium Glow and Daylight Visibility

Night Fision sights use self-illuminating tritium tubes paired with a bold yellow front sight for dual-condition use. In darkness, tritium glows without activation. In daylight, the yellow front draws your eye fast to center mass. This sight set fits FN 509 platforms directly without gunsmithing. If you're sourcing parts through a private party transfer process, TacticCAL can receive and install compatible upgrades at our Sunnyvale location. Visit our firearms dealer in Sunnyvale for our full catalog.

Frequently asked questions

Do these sights work on all FN 509 variants?

Yes. The FNH-101-007-YGZG is engineered for standard FN 509 dovetail slots. Verify your 509 model uses factory dovetails before purchase. Compact and tactical variants may require different sight models.

How bright is the tritium in low-light conditions?

Tritium sights produce a steady green glow in complete darkness without batteries. Brightness is strongest in the first 10–12 years of use. In twilight or indoor ranges, the yellow front sight remains highly visible without relying on tritium alone.

Where can I ship an online gun order near San Jose?

TacticCAL Gun Store in Sunnyvale receives online firearm orders for buyers throughout the South Bay, including San Jose, Santa Clara, and the surrounding Bay Area. Find FFL dealer Campbell at TacticCAL.