29 out of 30 people found the following review helpful
....unless the front sight has been specifically been made to fit the full size PX4, the front sight will be slightly wider than the sight channel. These sights were originally made for the compact carry and fit that slide perfectly. I don't mind the slight overhang, I'm estimating 3/32 on each side. If you do, I know people who have machined them to fit. That said, these sights are a vast improvement over the stock sights. There is no issue with the rear sight as to fit.
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