Years ago I owned new 622 and 2206 .22LR pistols. I traded them both away on some other long forgotten guns. Today, after a long search, I found a like new 2213 with the threaded barrel adapter. I pick it up next Wednesday, Yea!
Also found a lnib Walther TPH, got to see if I can swing the $ for that one to. Had three TPH's, all new, years ago.
At least I've learned, nothing gets traded away these days. Too time consuming and expensive to correct old errors