[Last Edit: 12/28/2003 9:17:58 AM EDT by canon3825]
The two position Colt stock I have came from an SP1 CAR carbine. It has a few clips around the edge of the butstock pad and a chip behind the hole at the top of the stock. There is also an eight didget number on the left side of the tube.
I would be looking for the $165 it cost me for a new Colt M4 stock. I made a Colt M4 out of the lower. If you want pictures please let me know.