Rack Grades are mostlty canidates for a rebarrel as are alot of the Field Grades. I would never mail order either one unless you are planning to rebarrel.
If going to one of the stores it is very possible to handpick a good Field Or Rack Grade
CMP didnt get any of their Carbines or Garands from Korea.
Its always worth a trip to one of the stores if at all possible
The latest first batch or Carbines were from Italy now from Greece