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

Night Fision's orange front sight delivers fast target acquisition in low-light conditions, paired with a square notch rear for FN 509 pistols. Whether you're training near San Ramon or upgrading your duty setup, quality night sights transform performance in darkness. TacticCAL handles FFL transfer in Sunnyvale if you're sourcing this set from another dealer.

Orange Front Sight Brightness

Night Fision's tritium-powered orange front sight cuts through darkness without relying on ambient light. The square notch rear sight pairs naturally with the front element for consistent sight picture alignment. This setup works for defensive carry, duty use, and low-light range sessions. If you're purchasing from an outside seller, our private party transfer process gets your sights installed and zeroed quickly. Most shooters report immediate accuracy improvement in dim environments. TacticCAL is your local gun shop in the Bay Area.

Frequently asked questions

Do these night sights fit all FN 509 variants?

These sights are engineered specifically for FN 509 pistols. Verify your exact model before ordering—the 509 Compact and 509 Tactical have different sight cuts. Contact us if you're unsure about your variant.

How long does tritium brightness last in these sights?

Night Fision tritium sights typically remain visible for 10–12 years, though brightness gradually decreases over time. They'll still glow faintly after that period, but replacement becomes practical after a decade of use.

What is an FFL transfer in California?

An FFL transfer is when a federally-licensed dealer like TacticCAL receives a firearm shipped from another seller and processes California's required DROS paperwork to legally transfer it to you. Find gun store Santa Clara at TacticCAL.