The only other state of affairs which i can envision is it may be a standard Model 70 barrel and action using a replacement XTR stock. This can be unlikely though...I suspect that it is when you explain, an unmarked XTR. Your browser isn’t supported any longer. Update it to https://winchester-model-70-pre-623333.theisblog.com/27009607/the-fact-about-model-70-featherweight-that-no-one-is-suggesting