When Truglo TFX PRO sights immediately took off and gained critical acclaim, they noticed that the world of TRITIUM night sights needed a similar upgrade. Starting with the brightness and durability of their original TRITIUM night sights, Truglo added all of their PRO level features, now including an orange FOCUS-LOCK ring for increased front sight contrast. Front sight FOCUS-LOCK ring for even faster focusAngled rear sight edge for emergency one-hand operationUnmatched visibility in all shooting conditions 24/7Compact design maintains factory sight radiusAssembled in USA with quality Swiss tritium for maximum brightnessGlows in the dark-no batteries or light exposure requiredFORTRESS FINISH nitride protective coatingFits standard holsters