Glowing bright both day and night, TFX(TM) sights are always ready. TFX(TM) takes their award-winning Tritium + Fiber-Optic technology even further with all the features their customers requested: compact snag-free design, longer sight radius, and amazingly durable construction built to handle just about anything. Illuminating elements are encased inside a virtually indestructible chemical and shock-resistant….