The XS Sights SI0014S5Y DXT2 Big Dot Night Sights-Sig Sauer Black | Green Tritium Yellow Outline Front Sight Green Tritium White Outline Bar Rear Sight deliver rapid target acquisition in both daylight and low-light conditions thanks to a high-contrast green tritium front dot surrounded by a yellow outline and a precise white-outline or tritium-centered rear, with the optional DXW2 non-tritium rear configuration available to suit different lighting needs. Crafted from durable CNC machined steel, these sights feature a low-profile rear that enhances front sight visibility, a simple dot-the-I sight picture, and a rear ledge designed for one-handed slide manipulations, making them ideal for serious defensive or duty use. The front Big Dot measures 0.188 inches for quick, instinctive alignment, while the glow dot absorbs ambient light and continues to glow in low-light environments, ensuring fast and accurate shots when it matters most. With a 10-year warranty and a 30-day satisfaction guarantee, XS Sights ensures reliable performance, compatibility with standard holster options, and a robust upgrade for SIG Sauer handguns seeking increased accuracy and confidence at both range and on duty.