Trijicon Bright & Tough™ Night Sights are three-dot iron sights that increase night-fire shooting accuracy by as much as five times over conventional sights. They do it without the need of batteries, impressively enough. Bright & Tough Night Sights feature a shock-resistant design. Contained within aluminum cylinders for additional protection, the lamps are mounted on silicone rubber cushions to withstand shock and heavy recoil. Green lamps are warranted for 12 years from the date of manufacture.
Fits FNH Models: FN509