My daily carry gun for the past year has been the Smith & Wesson 640 Pro Series. This J-Frame .357 Magnum offers many features not seen on other guns in its size-class. In Part I of this review I am going to discuss the gun itself, in detail. In the next part I am going to cover the piece’s range performance and actually carrying it – a task at which I have fairly considerable experience. Disclaimer: My apologies for the dirt, dust, and scratches on this piece. She has earned those marks honestly.