TruGlo TFX FNX40 Tritium/Fiber Optic Green 3 Dot Night Sight TG. These Pistol Parts created by TruGlo use a Swiss-made tritium substance that is incredibly bright and durable ensuring these sights will last. For a glowing aiming point without the use of batteries simply apply a bit of light to the TruGlo TFX FNX40 Tritium/Fiber Optic Night Sight. Fiber Optic attachment points are incredibly powerful helping light your squinting arms in the dark. Plus there's a Focus-Lock feature to keep your sights locked on target. Equipping these sights will provide you with a visible aiming point 24/7 which is crucial in tactical situations. Equip the Truglo TFX FNX40 Tritium/Fiber Optic Night Sights to your FN X40 pistol for a reliable aiming point that will excel in any low light and high light settings. Specifications for Truglo TFX FNX40 Tritium/Fiber Optic Green 3 Dot Night Sight: Manufacturer: TruGlo Gun Model: FN FNX-40 Color: Steel Green Black Rear Sight Color: Green Gun Type: Pistol Country of Origin: USA Package Contents: Truglo TG13FN2A TFX TFX FNX40 Tritium/Fiber Optic Green 3 Dot Night Sights The Truglo TG13FN2A TFX TFX FNX40 Tritium/Fiber Optic Green 3 Dot Night Sights is a quality addition to the TruGlo lineup. For more great deals on Tritium Pistol Sights by TruGlo please browse our TruGlo Gun Parts page. TruGlo TG-TG13FN2A: TFX FNX40 Tritium/Fiber Optic Green 3 Dot Night Sight