The T/C forearms never had these inserts but some aftermarket stocks had them. The forearm might take an unnecessary beating by shooting without one so here is what I did to make one that I needed. Depending on the hole size, I used an appropriately sized empty case( a 223 Remington in my case) and drilled it out to accomodate the screw. Next, I placed it in the screw hole with the base towards the barrel and trimmed it down to the wood. A flat black paint finished off the thing and it worked fine. Unless you have a through hole without a step, this should work for you. If you have a hole bored straight through, You will need to epoxy(acraglas) this in place but with some care in fit and finishing, it will work fine.