Blaser R8 Carbon Success stock with brown leather in 65 Creed. R8 flutted barrel. R8 bolt head st dlc rh. Bolt handle ball dlc. R8 bolt housing rh. Carbon fiber, best known from the racing sports, offers an astoundingly high strength at an extremely low weight. It only stands to reason that this material should be used for what is currently the best thumbhole stock on the market. The joining of carbon fiber with robust and luxurious leather inserts in the pistol grip, fore-end and butt stock results in a never-before-seen combination, one that reflects the best of both worlds in a unique as well as highly accurate hunting rifle.