This is the stock that first came on the pre-ban era Colt AR15A3 Tactical Carbines and later on the first Colt LE6920 M4 carbines. It has since been discontinued and replaced by the current issue M4 "waffle" style stock. This unit is easy to ID as a legit Colt product as its Colt marked 1 & N down by the release lever. This stock has not seen much use and is in excellent to like new condition. I am asking $159.00 plus shipping and will e-mail pics to a serious buyer. Please contact me via IM or e-mail.