I've been bitten by the bug to build an AR-15. There are many options out there so I wanted to check with you all to get your opinion. This is my first build so you guys take it easy on me here . I'm going to build the lower first and then look at tackling the upper after the lower is complete. I'm not sure if I want to completely piece together an upper half or not. I may buy something like an RRA Tactical CAR A4 complete upper...but then maybe not...not real sure yet. I'm open to suggestions. I'm entertaining the idea of purchasing a Wilson lower along with the lower parts kit which will get this thing started. They seem to be a little more expensive but I've heard that they are fantastic. Is there any real advantage that one bare lower has over another?