While you can build up a practical rifle on a model 70 action, and I have a number of them, it is hard to make a reasonable weight with the Winchester action. And, you won’t get features like a DBM, and the sight flexibility that we have come to enjoy with AR style rifles. If the new Sig rifle is what they say, this may be a way to get AR style features in a practical rifle weight. I really am rooting for them.