only sold together will not sell the lower itself. 

This is brand new and a complete upper as sold by manufacturer, 18" FDE 223 wylde, S1-Atlas 15"  Stripped M4E1 FDE lower and Aero scope mount, all in box new 

$600 for everything, I will add a charging handle and parts kit loose mil spec parts I have, for full purchase only

Original purchaser and CCW holder, know what you are buying and what comes in a complete upper , there is no BCG or Charging handle, I will add a charging handle, you will need to know how to or watch to assemble the lower kit , upper is fully assembled from manufacturer, if you can find it cheaper buy it price listed is the price. 

602-8102364

only trade for new Chris king 32-28 hole 6 bolt seam xd 148x12 axle maybe  Shimano HG