This is the part in a typical Mauser 98K. It's imbedded in the stock behind the action lug. I don't want to have the steel lug visible outside the stock of course. I just don't trust the stock wood alone to protect the stock. One sporter stock had 3 steel pins sunk in the wood where the lug would have been.
This is a web site on eBay that shows the recoil lug. http://cgi.ebay.com/WWII-VZ24-MAUSER...item518a25e3c0