Not sure what exact generation AICS this is, I believe a 1.5 with the adjustable cheek piece but I could be wrong. I am the second owner of this chassis. Nothing wrong with it but I am just a fan of McMillan stocks over these. Personal preference I guess. $515.00 shipped. I would also be more than willing to take a straight trade for a McMillan HTG 700 SA with a hinged floorplate cut.