With a 32mm scope and now a 42mm finally out, I hope Nightforce starts making 'extra' low rings. Their Ultralights tend to be my first choice when ring shopping, but the lows could be lower- The 50mm NXS in lows on their 20moa rail already floats well above a Sendero contour. The 42mm will offer even more wasted space. I bet extra lows would have a market. I would buy them anyway.