Well, after having some factory built .308 AR platforms (as well as M1A's and FAL's), I'm going to take the plunge and build my own .308 AR. I will use KAC/DPMS/Magpul mags. SI industries matched GEN2 upper/lower. Either Lilja 3 groove or Krieger barrel. It will be a 16 inch barrel. Geisselle...