I have a light weight Commander and a standard stainless Commander. My light weight has a tendency to shoot low (approx. 1 1/2-2") I went to the Brownells sight where they show you where to measure and interestingly I found that I have a difference of .022 on my lightweight. My lightweight front sight is taller than my standard stainless. When I measure from bottom of the slide to the top of the sight, I get a ..032 difference. Brownells says to measure front top of both front and rear sights on the sights only. My question to you: Could that .022 make the difference in my sights @ 50 feet. I don't know how much a thousands makes in drop or elevation? Some where I think I read where .010 can make almost an inch difference. If you have any idea, please let me know. I know I need to lower my front sight to raise my POA. I want the POA to be the POI @50 feet.