Let me start with the fact that I really don't know what I want. I have little information about these rifles and I would like to learn as much as possible before purchasing one. I have a few ideas of what I want, but am not entirely sure what to keep in mine when I am looking. If there are any sites that have a good over view of the Ar-15 style weapons then please post them so that I might learn and be bettered. Please don't over load me with details. Back Story: Like I mentioned that I have very little knowledge and NO trigger time with one of these. Although I have shot 7mm, 308, and 30-06. So I have shot some rifles of some sort. Do I really know what I want? I have been trying to do some research. And here are some concussions that I have gathered so far. 1. I am looking for a gun with out a bunch of extra crap on it. 2. I want folding sights so that I can have a low profile Red dot. 3. M-4 style stock min. 4 positions. 5. I really don't get the difference in between the 556 and the 223? 6. I believe that I would like to have the option to add a flashlight to it. So if you would be so kind as to direct me in the the correct direction that would be great. Price: First one so keep it on the lower end.