Night sights that fit on the M&P series are supposed to fit the Shield, but I haven't replaced them yet. The emp is roughly 3 times the cost of the Shield. If I had to do it over again I would have gotten multiple Shields instead of the EMP. With that said the EMP is my favorite "small gun" followed by the Shield. I almost never recommend any gun, believing that you should try and choose the best that fits you, but the Shield is an exception.