Now I know some of you on here are worried about the height of your sights so I thought I would share some pictures I took today.
I didn't have a ruler with me but guessing, I would say that the USSS ring sight is about 5mm shorter than the Factory White Ring Sight.
For a dimensional Comparision of the two ring sights, the USSS black ring sight is smaller than the white ring sight.
White Ring Sight on Left and USSS RBlack Ring Sight on Right. Note the USSS right sight is smaller in height.
Sorry for the poor pictures, I had some bad lighting problems.