XS Sights DXT Big Dot Night Sights – HK P30 / HK45 / VP9. The XS Sights DXT Big Dot Night Sights are designed for fast target acquisition in all lighting conditions. Featuring a large tritium front dot and a vertical tritium stripe rear, they use the “dot-the-i” sight picture for intuitive alignment under stress. The shallow V-notch rear increases field of view, while the high-visibility front enhances speed and accuracy. Built from durable steel and precision-machined in the USA for reliable defensive performance. Fits: HK P30, HK45, VP9 pistols. Front Sight: Large white Big Dot with tritium insert for low-light visibility. Rear Sight: V-notch design for fast alignment and wide field of vie. Construction: Steel housing for durability.