Depending how much you like to tinker and if you have a dial caliper you can get the perfect rear sight height by experimenting. Cut some narroe little strips of electrical tape so they are the same width as the tops of your rear sight. Put a strip on each side. Run up the front across the top and down the rear. Doesn't need to be pretty, just don't mess w/ the width of the notch. Once you build the sight hi enough that you're hitting where you want, pull the tape and measure it's thickness. Now you know how much taller a rear sight you need.