I've been looking for a replacement stock for a Winchester 52 pre-A. The only commercial stock I could find was for a 'B' model and was the original 'old design'. Then I noticed my CZ452 Varmint inletting was VERY close. I ordered a ROSS Varmint Thumbhole for a CZ452 and would guess it was a 75% fit. After 5 or 6 hours of chisel and dremel work I now have a modern ergonomicly correct stock. This is the first stock I ever inletted and found it very easy to complete.