I liked the night sights OK on mine, but the "dot inside a ring" appearance was a little distracting. For pure functionality the contrast ones would probably work better.
You can kind of see it in these pictures--the actual tritium element is set inside a larger white circle. They don't look exactly the same as plain white-dot sights on other pistols, althogh I've not seen the P320's contrast sights.Dot inside a ring? from my understanding, talking to Sig Sauer, the sight appearance is exactly the same, one glows in the dark, one doesn't.



























