Was there just one piece that wore down or did a piece break off and was lost due to the small size? I you had the broken pieces that could be welded or a new piece made off of it.
If you can give us more information on the Model # and maybe we can find something to make the FIX.
I remember about the TC Center 22 Classic. We have one and all parts were discontinued many years ago.
There are some places that still have some left-over parts for TC.
Keep doing searches and actually calling retailers. Also try E-Bay.
If you can find someone that has the same rifle and get detailed pictures for the Bolt Release and GS could add a piece to your broken part.
I'll keep looking for you.
It can get fixed one way or another.
Do you know what metal the part is made of? Steel, Die cast, aluminum?
Did it just "Snap Off-Break"
How did you notice it was broke?
Thanks
Len & Jill