The K6s 3-dot night sight system provides all the features of our standard 3-dot sight system (4000152), with the added advantage of low-light visibility. These sights use tritium technology, which requires no charging or exposure to sunlight, making them an excellent choice for concealed carry and home defense. Compatible with all K6s revolver models, the rear sight is windage adjustable and secured with a set screw lock, while the front sight requires drilling and pinning. Not compatible with K6xs models.