i have two mcmillan thumbhole stocks set up for tac rifles and both include CDI bottom metal. both are PILLAR bedded for surgeon RSR or 591 receiver in right hand with STAINLESS pillars. the blk and od green stock has two flush cups on the underside of the fore end and one on the underside of the butt and has a #7 barrel channel . the tan and grey stock has two flush cups on the left side of the stock and one under the fore end and has a medium palma barrel channel. both are in outstanding condition. go to holland shooters supply to see the stocks. $500 each for the stock with bottom metal shipped in the CONUS.