My other AR15 is one I pieced together a long time ago. It was originally set up to do varmint hunting. But, I got off a lease and hunted public land requiring shotgun or muzzleloader. It currently has a fixed skeleton stock, Rock River 20" stainless heavy barrel and a Nikon 3-9X40 BDC scope on it. I also have a Harris bipod for it. I definitely can use it as is. I am thinking maybe a stock change and keep it as a long range shooter/varmint gun. As set up, it is a bit too heavy to lug around the woods. I have bolt rifles for deer hunting. So, no need to change the barrel and caliber for that purpose. Suggestions?