Simply put TruGlo manufactures bright ideas. When TFX PRO sights immediately took off and gained critical acclaim we noticed that the world of Tritium night sights needed a similar upgrade. Starting with the brightness and durability of our original Tritium night sights we added all of our PRO level features now including an orange Focus Lock ring for increased front sight contrast.Features / SpecsFront sight focus lock ring for even faster focusAngled rear sight edge for emergency 1-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