After looking again, I'm more certain than ever that it is a fajen replacement.
Winchester would never have put that diagonal cut forend on. That forend tip, at least on mine, is rosewood. Mine came square cut and I left the square cut instead of rounding it off. Their standard wood was ozark forest grown black walnut that was good, dense, well colored, and it usually had good grain, even in lower grades, but nothing special in the lower grades. I never saw a single stock from them that wasn't head and shoulders above the typical wooden stock in the past. Now that everything is plastic, a walnut stock is invariably better than they ever were in the past on the lower and entry level rifles.