The budget AR thread has me thinking I want one. I have no experience with the AR platform. I would assume 223 is the best way to go. Any recommendations or what to stay away from is appreciated. I was looking at MP 15's to have similar 22lr and 223 rifles. I need to do more reading on sights etc. I have too many handguns and may sell a few or trade for the right AR to fund this project. Any thoughts or recommendations are appreciated.