You must be lucky, you owned one before they were available...
I thought I bought it around 1980 - they had just been released. I don't have the receipt handy. Maybe it's only 25-years old....in any case I know it was a long time ago and it's a purchase I've never regretted.
Happens to alot of us, we lose track of time.
The first A-Bolt Stalker (syn stock) was offered in '89 IIRC. Other than maybe the Weatherby Fibermark, it was the first factory synthetic stocked rifle offered to the masses.