If the older DW is a model that is currently in production the barrels and shrouds will indeed interchange with new production.
The easiest way to check is if the revolver's barrel and shroud have the internal barrel nut that requires the special DW wrench.
Watch out for the early Models 11 & 12. IIRC these had the external nut, looked like a 12 point nut, to attach the barrel & shroud assembly. I believe some of the newer Model 14 &15 internals will fit the 11 & 12, but I don't believe the new style barrel and shrouds will fit. There is nothing wrong with a Model 11 or 12, they are great shooters and just as strong as the newer 14 & 15 series, just some parts may not be available.
Let us know how you make out.
Take Care
