Zero Gravity Summit 34mm Ring 1.70in Black 34mm Rings 1.70" Height

Zero Gravity Summit 34mm Ring 1.70in Black 34mm Rings 1.70" Height. The problem with using only two pieces to clamp 360 degrees around a tube is that there must be clearance allowed for assembly and material stretch under tension. (Example; The gaps on each side of most scope mounts.) As the rings are tightened compressing the scope tube the scope tube takes the shape of the allowed space deforming it. Consequently the deformation of the scope tube affects the position and alignment of the lense