Sticky Holsters SPR: The Sticky Stock Pad/Riser is a significant improvement over other products on the market. The base and cheek pad/riser are made from the padded Sticky Material to ensure the SPR does not slip or move especially at the moment the trigger is squeezed. It is ambidextrous and uses two elastic hook/loop straps to mount to the stock. The SPR has a loop patch on either side to mount one of our ammo holders or Dope card holder and even a moral patch. The SPR can be mounted to most bolt/lever action rifles and most semi-auto and pump shotguns.