Here is a pic of my recent project. (completed the one for my friend this is another...)
Essential Arms matched upper and lower, with Tuff coat, came with Charge handle, teardrop forward assist and dust cover ($188)
RRA lower parts kit ($70)
4 Pos collapsable butstock ($36)
Bolt and bolt carrier ($105, from member here on Campfire, Thanks!)
YHM BUIS ($65)
Stainless steel magazine (FREE!)