Okay so a couple weeks back i was talking about whether to get the S&W M&P 15 sport ir the Bushmaster carbin 15 as my first AR. Overwhelmingly the S&W was recommended as was my assumption in the first place. However now I am thinking about buikding my first AR fir the experience and because I think its awesome. Also for pricing reasons. But I want to keep it sub 600$ otherwise I might as well buy the 15 sport because thats what I can afford. First of all, who has buikt a budget AR like this that is as good or better in parts than some of these bushmaster, s&w, ruger entry level ARs? Where did you buy your parts? Did you buy complete uppers and lowers and get sights and stuff or did you buy all the parts and assemble them yourself? What tools will I need if any? Thanks a ton guys.