I have a Winchester Model 70 Stock that was for an early 80's XTR Featherweight in .257 Roberts. It has a Pachmayer White Line Pad and I was told it is an early lightweight polymer or resin based factory stock from that era but it very well could be aftermarket. At least 30 years old. I got it in the deal with a .257 Roberts AI Model 70 XTR and it has been sitting on a shelf ever since. Decent shape and structurally sound and complete. $110 shipped obo.