The AmeriGlo S&W/M&P Shield 3-Dot Tritium Front and Rear Sight Set includes a GL-112 front sight with a 0.140" blade and a GTR 650/69 rear sight with a 0.150" notch. Designed to fit most S&W/M&P Shield firearms, these sights feature machined-steel construction for strength and Tritium light sources with bright outlines.