I have a factory stock and forend for the G2 which came with the first frame I purchased. Second frame was just a frame with no wood. After carefull deliberation I ordered a gunstockinc in rollover cheek laminate with palm swell.
Three days after my order the stock was on my doorstep ready for finishing. Of the two I prefer the gunstockinc. Looks, feels, fits better. I think either the factory or gunstockinc will cost pretty much the same.
I don't like the thumbhole stocks as I hunt with mine. The thumb needs to come up and cock the hammer as you are shouldering the rifle.
JD