Try gun shops, gun shows, want ads, e-gunparts.com
Dunhams has them. Just bought one today.
This refers to the parts of a rifle: Lock, such as Flintlock; stock as the wooden stock and the rifle barrel. So, if you bought something lock, stock and barrel, that meant that he accepted the whole thing or the whole story and not just a part of it.
Egunparts
Contact the maker.
remove the buttplate screws, and the buttplate. In the large round hole in the stock is the stock bolt. That is unscrewed to remove the stock from the rifle.
You need a gunsmith
http://www.gunville.com/products/winchester-57-stock
$125.00
Weing stocks
$700
HigginsThis rifle was made by Savage /Stevens They sold them as the Model 6/87 semi auto rifle a very good rifle .The Tenite stock and JC Higgins name means It was made after WW2 Infact it was made around 1950 the value is around 100 to 150 dollars depending on condition how ever dealers pay considerably less for them .But that is what they sell them for. The model 87 with tenite stock is in demand with Stevens collectors even those made for JC Higgins Sears and Roebuck
On line auctions,