It seems that on the EE Board a pre ban lower is going for around $600 so I am looking for $600. That would be the lower with all the internals but no stock. The lower is marked "SPORTER LIGHTWEIGHT CAL. 9MM-NATO". The only mark in the finish I can find is a 1/8" scratch on the left side between the trigger guard and the grip. The lower has been set up for .223 by removing the 9mm magblock and switching the bolt catch and hammer. The front pin is the larger (.320") front pivot pin and large (.170") current production fire control pins. I would include an adapter pin for the pivot pin that would go to current production (.250") upper. The sear block has been prfessionally removed by Stokes.
I also have a Colt older style "M4" four position stock with the extra heavy 9mm buffer and a Colt drop-in from the bottom 9mm magwell. The stock has the "N" and "1" Colt proof marks. I'd be looking for $125 each for the stock and/or the magwell adapter. It has been a fun set up because with a push pin pivot all I needed is an allan wrench to switch for .223 to 9mm. Please let me know.