I would start at Numrich gun parts corp.They may be found on the web.
Which model??
We have parts for that model. gunshop@nctv.com
That model is obsolete, but we have a good selection of parts. sales@countrygunsmith.net
Try e-gunparts.com
Egunparts
Go to Numrich Gun Parts Corp.
Numrich Arms is a good source for gun parts.
Check with a gunsmith, or find the model number of your rifle, and check on line parts supply houses, like gunpartscorp.com
The Sears Model 42DL .22 caliber rifle was manufactured by Marlin Firearms, their Model 80. Check with Marlin for parts availability.
The Sears model 2200 is the same as a Savage Model 80 Series A.
It is the same as a Winchester model 141 and parts are available from Numrich gun parts
Your rifle was made for Sears by Marlin- it is their model 81- a popular rifle. Parts may be available on their website from gunpartscorp, or any good gunsmith.