Pistol Pack ships with 4″, 6″ and 8″ barrel lengths. Each case has compartments for the three additional barrel assemblies and factory-supplied barrel wrench kit.

Original Dan Wesson pistols improved on the accuracy and service life of the traditional double action 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 , it adding to the accuracy of the pistols.