In the past Dan Wesson made 2.5, 4, 6, 8, 10, 12 and 15 inch barrel/shroud assembles for the model 15. Also in light, heavy and vent heavy shrouds. They pop up on auction sites and at gun shows from time to time. You can buy new 2.5 through 10 inch assembles from CZ, the current owners of Dan Wesson Arms.