They fit the performance center model - AmeriGlo Smith Wesson Night Sight Sets, Green, M&P Shield

A "gear expert" in the question section said they wouldn't fit. They fit fine but are dimmer than I'd like. A drop of Kroil overnight helped. Install required rubbing the front on sand paper. I like that there is more light around the front. 147 grain seems to hit a poa just like the factory ones did.