SP1 was the first o/u I ever shot . Very light. Super nice .I had a Beretta Silver Pigeon in 20 gauge. It was so light you would have thought it was made out of Styrofoam. It was truly a work of art and a ingenious design. One of the worst moves in my life was to sell that gun it was truly one hell of a gun. As well made and as balanced as they come from a production gun.l