Simply put, TRUGLO manufactures bright ideas. When TFX PRO sights, including the Ruger LC9 LC9s LC380 Pro night sights, immediately took off and gained critical acclaim, Truglo noticed that the world of TRITIUM night sights needed a similar upgrade. Starting with the brightness and durability of our original TRITIUM night sights, they added all of their PRO level features to give you the advantage when you need it the most.