I want to get an AR. I'm pretty much a noob and am looking for some advice. I want a good quality piece that shoots well and is quality-built. I'm looking to get a built rifle - not to gather up a bunch of parts an build it myself, at least not this first time. I plan to learn to shoot this rifle with basic open sights, and with no accessories, but I would like to have the option to upgrade with accessories if/when I think I need them. I look at different web sites and I see that a lot of makers have numerous configurations and styles that I know nothing about. I do not plan to hunt with this rifle. Please help me out with suggestions on manufacturer and specific models, ammunition, and the best places to shop. Thanks.