I'm in the process of acquiring a fairly nice 220D in .410 sans forend for a decent price. Happens I have a spare forend which is probably for a 219B but LOOKS like it might fit the 220D. We'll see. The 220 has the usual birch stock, so the walnut forend will be an obvious mismatch, but since I want the .410 for my cabin, it won't really matter (no gun collectors around there to be offended, or even puzzled). If the forend won't work, I may just keep the 220 barrel and sell the whole "back end" to somebody who has a 220B, C, D, or L front end. In any case, I'll send in a data sheet when I have the gun in my greasy mitts (about a month, given UPS and our CA "papeleo" ("paper chase")!
Mike Armstrong