Gunsmith said these were terrible - TruGlo Brite Site Tritium Pro Beretta PX4 Storm Full Size Front/Rear Night Sight Set

Gunsmith tells me the rear sight was a "decent" fit but the front was basically too loose to allow and had to do all kinds of work to get it to fit better only to result in there being light under the front of the sight. He said the finish marred far more easily than anything he's worked with before and he couldn't use a darkening agent to fix it like the others, meaning the metal is cheap junk. So in short, these don't actually fit TIGHT into the dovetails, the metal is cheap, and the finish is weak.