Dan Wesson Model 15 Revolver chambered in .357 Mag. The Dan Wesson revolver improved the accuracy and service life of the traditional double action revolver design in a few ways. The tensioned barrel of the DW interchangeable barrel system enhances accuracy, pulling the barrel tight like a guitar string, enabling it to vibrate at the same frequency every time. The forward crane latch, located in front of the cylinder and paired with a rear ball detent, helps to ensure proper cylinder/barrel alignment during firing. Superior to the rear locking designs of other revolvers, it adds to the accuracy of the Model 15. Includes a 6-inch barrel. No box or wrench kit.