I hunt with a 209x50 T/C Encore ml handgun. I bought it used chambered in .30-06 from a dealer on GunsAmerica.com that was made "pre-fired shell casing" and "pre-internal lock". Then just bought the ml barrel from Fox Ridge Outfitters, T/C's custom shop. No big deal. T/C will quote manufacturing date before a potential purchase to be certain.
Bought another Encore pistol used in .223. Just had to have a custom lock made for it for $20. Like most other guns, MDers can get them if we are willing to go through the maze.
That's why I questioned his reply myself.