Try e-gunparts.com
there are several listed at gunbroker.com
Nu-Line Guns, Inc
Sarco has them in stock there part # Misc119
You could try Numrich gun parts corp.
The model 100 .30-30, if it's the one with the visible hammer, is a copy of the Winchester '94. It was probably made by Winchester. A Winchester '94 stock can be made to fit. If it's the hammerless model it's a copy of a Savage '99. A Savage '99 stock can be made to fit it. TexasCharley -- Post-64 Winchester Model 94 -- The Ted Williams/Sears Model 100 is a version of the Winchester Model 94 as made for Sears by Winchester. They originally had walnut-stained hardwood stocks. We can supply new walnut stocks to fit. sales@countrygunsmith.net
Model 94 winchester 30 30
By providing a serial number to your Winchester model 53.
Your Winchester model 1894 was made by Winchester in 1974.
need help to find schematic for a Winchester model 61
You can try Numrich gun parts, ( e-gunparts.com )
have you tried the Winchester web site
Do a google search for "Winchester Model 12".