Slider guide for bottom of mirrored bifold closet door

A home owner from Pennsylvania says:
The plastic guide that fits in the rail, that the door peg sticks into, has broken. I can't find where to get a replacement. I'm not sure the age of the door or the manufacturer. The label is partly covered (see photo).
Do you know if the part is still available anywhere?
Thanks.
Thumbnail of the uploaded file named bottom stationary guide.jpg
Thumbnail of the uploaded file named door pegs.jpg
Thumbnail of the uploaded file named guide rails.jpg
Thumbnail of the uploaded file named label.jpg
Thumbnail of the uploaded file named part.jpg
A home owner from Pennsylvania says:
Just to clarify, I'm looking for the moving part (last photo showing broken piece on the paper). The stationary end is intact.
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Paul from SWISCO responded:

We suggest replacing the top and bottom tracks with either our 21-450, 21-452 or 21-455, depending on the length you need. They come with the 21-175 pivot bracket and 21-174 roll guide. You will also need the 21-286 snugger to keep doors closed. The new tracks work with the 23-115 and 23-116 pins. Thank you!

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