I am thinking of purchasing a set of see-through weaver rings for my 10/22 (around $12 at Walmart). These are the kind that mount right onto the receiver without the need for the factory rail, and allows to use the iron sights. Has anyone here used these? What do you think about them? I am planning to put a 3-9x40 Simmons scope on it. Any experiences with this setup? How about recommendations on alternate setups?