Ok Im looking for input from my fellow shooters. I bought 10 lowers from palmetto today in preperation for AZ shootout future ban I see coming. Anyway, I havent built an AR in years. What hot, whats not. I need everything for it and I would like to keep it under $1000. I want a 16" Flat top for optics. Tell me what you like or want and what you dislike and why.