I read lengthy threads on the S&W forum for sure, and either this one or glocktalk concerning S&W dropping some of their K-frames and adding these 2 models. These will have, according to those threads, shorts underlugs and fixed sights, in 3 or 4 inch barrels, with 7 shots. Many on the S&W forum (including yours truly) also questioned the marketing brilliance of numbering a gun with 666.