I have a K80 stock for the standard rib barrels that has 4 way adj comb and just installed a Gracoil recoil unit. This stock belonged to a lady and was cut short so I had the recoil unit installed. Stock has no cracks and normal handling marks and the LOP with existing pad is from 13 3/4" to 14 3/4" . Stock is almost neutrak and comb is cut for a RH shooter but would work for a lefty. (( $350 Delivered to your address in the Lower 48 )) Any questions please send a con message for info and contact # - Thanks Bob