This black Brick or Armageddon Grippy Rear Bag is constructed from heavy-duty "Grippy" rubberized material that grabs the rifle stock for a solid shooting position. Under the strap is a nylon panel so the shooter can slide his hand under the strap when needed. The strap consists of overlapping velcro-lined sections allowing the bag to be attached to virtually anything. "The Brick" maximizes control and reduces fatigue with its perfect size for an in-hand fit.