Also Tru-Glow on my shield 9mm. Made a world of difference. Had local gun shop install $25. Was worth every penny from what others have said about installing them. The fiber optic in any light stand out well but non snag by design and not visible from the front of the weapon. Well worth the investment to me.
A couple of years ago I had XS Sights installed on my Shield .40. I love them. They re excellent during the night and low light times, are good during the day allowing fast acquisition of the targets. They do not interfere or snag during a draw or reholstering.