I put a XS Big Dot Tritium on the front, (the rear sight with this set is a straight 8 style with just a painted vertical stripe in the middle with no tritium on the rear sight). I am currently trying to find a rear tritium night sight for the rear of the slide. Wished S&W made a factory set of night sights like Sig does for the "Sig-lite" sight set on the P-238. Off subject, you may want to check on the "Mag-Guts" brand magazine upgrade. It is a new set of springs, follower, and floor plate that allows your current stock S&W magazine body to convert to 7 rounds without changing the size of the stock magazine body.