The Ameriglo ProGlo front sight series offers an optimal enhancement for Glock handguns. Upon installation, the ProGlo sights significantly improve accuracy and target acquisition, particularly in low-light conditions. This improvement is due to the integration of a tritium lamp encircled by an outline that provides enhanced contrast. ProGlo sights are compatible with all generations and models of Glock handguns and are available in various heights and multiple outline colors. Round front sight with tritium Illumination - enhance your targeting accuracy with this durable, glow in-the-dark sight for optimal performance in low-light conditions This product is designed to be fully compatible with every generation and model of Glock firearms, ensuring seamless integration and optimal performance