XS DXT2 Big Dot Tritium Night Sights offer front sight visibility in all lighting conditions. These sights drive focus to the front sight using a high-contrast front and a V-notch rear for an unobstructed view of the front sight. DXT2 Big Dot uses a patent pending glow dot that absorbs light and gloves in low light levels before it is dark enough to see the tritium. Optic Orange is designed to offer a high-contrast sight picture in bright conditions and maintain visibility in decreased light. Dot-the-“i” sight picture with a tritium dot in the front sight and tritium bar in the rear, prevents confusing the front and rear sight in high-stress situations. Does not fit the M&P .380 Shield EZ.