Caldwell HydroSled Rifle Rest
is a recoil-absorbing rifle-cradle for grouping and zeroing from a bench. It has a frame of steel tubing supporting a moulded plastic cradle that includes a durable, blow-moulded plastic reservoir which can be filled with water, sand or pebbles to add weight. The frame and empty reservoir weigh 7.25kg; filled with water it weighs 8.6kg.
