Numrich Gun Parts Corporation at www.e-gunparts.com, also try gunpartscorp.com, or Google Numrich. I just purchased a magazine assembly from them. If it is a Mod 29 there should be a Model stamped in the barrel near the serial number "Model 583.78 or 583.79"
I would start my search at numrich gun parts corp.I would also try egunparts.net.There is a good chance that your J.C. Higgins model 29 may be made buy High Standard.
e gun parts.com
Try e-gunparts.com
I found parts for my model 29 at Numrich Gun Parts in New York. Their web site is e-gunparts.com
AnswerJ.C Higgins Model 29 was manufactured for Sears by Hi Standard:Not all J C Higgins were made by Hi Standard, but this model was.Marlin, Winchester, Browning and Savage also made guns for Sears.
Hi Standard model 499m
Try e-gunparts.com
Do a google search for JC Higgins Model 29 and you will find a downloadable PDF file for the original owners manual. That is where I got mine and yes, it is the original owners manual. The gun was made by High Standard for Sears Roebuck starting in about 1955 or so and you can find some parts for it at Gun-Parts.com.
Proofhouse.com has a store brand chart.
No, The JC Higgins model 29 is just like the model 31 without a sling. the difference between the model 30 and model 31 is the bolt is on the left on the model 30 and on the right on the models 31 and 29. Models 30 and 31 both had a retractable sling.
Stimson High standard Page on the web
10-100 USD