Walnut Grove gunstocks has a pattern that closely resembles the factory stock. They may even use a factory stock as a pattern for all I know. They show a couple in stock for immediate delivery, albeit with figured black walnut, for only a few bucks more than that factory stock on ebay. They provide a kidney cheekpiece, but that can be made to disappear if you don't want it.
My experience with WG stocks is that they have been relatively easy to finish inletting, ditto final shaping/finishing.
That's good info...
