www.pelletstovesforsale.com is the site and source for it. All of these options are a great way to search for pellet stove parts as well. www.alternative-heating-info.com ia also one more reliable option. You can find affordable pellet stove parts at www.pelletstovesforsale.com. Another good website is www.pelprostoves.com/how-pelpro-stoves-work.htm
Winchester
Generally, if you get on the website of the pellet stove manufacturer, they will provide you a link to replacement parts for your particular model. Be sure to have the model number handy so you are sure to order the right part. A great place to find replacement parts for all kinds of stoves and woodburning furnaces is www.woodmanspartsplus.com. There is also a more specialized website, www.pelletstoveparts.com/, that has parts just for pellet stoves.
This should help.
Numrich gun parts
Pelletstoveparts.com has a very complete selection. They are also good a finding parts for a particular manufacturer and model of stove.
E-gunparts.com click on Winchester then 74 at the top you can buy it for about $1.50
Try gunpartscorp.com They will be more likely to have parts than anyone else in the world.
Try Numrich gun parts corp.They may be found on the web.
The Sears 200 series = Winchester 1200. Parts should be available from e-gunparts.com if you can't find them locally.
It is the same as a Winchester model 141 and parts are available from Numrich gun parts
Try Numrich Gunparts. They have a wide variety of parts and schematics for older firearms.