Which model??
Yes, but it is Glenfield, not greenfield.
Numrich gun parts, look under Marlin/Glenfield parts list
The Sears Model 42DL .22 caliber rifle was manufactured by Marlin Firearms, their Model 80. Check with Marlin for parts availability.
Your .22 is the same as a Marlin model 80. Marlin no long provides manuals for this rifle. I do have an exploded view and parts list for this rifle if you would like to email me with your email. I will provide you with a scan of the document.
We have virtually all the parts for most Marlin models. sales@countrygunsmith.net
The correct answer is Numrich gun parts. Or, just google Marlin A1 schematic and it will show you a list of parts that you can order and a complete schematic to view.
Depending on condition, about the same as any Marlin 70 rifle.
Marlin Customer Service, or the website for gunpartscorp.
The marlin model 781 .22cal rifle was made from 1971-1988.
Parets for the OTASCO 6085 are identical as those used in a model 60 Marlin from 1985. They can be purchased from Marlin, Brownells, or Gun Parts Corp.
Marlin