AmeriGlo I-Dot, Single Dot, Night Sight, For Glock Gen 5 9/40, Green Front with Lumigreen Outline, Green Rear, Matte Finish, Black GL-5301 Utilizing a dot-over-dot configuration" AMERIGLO i-Dot night sights are an excellent design for all shooters. The i-Dot sights provide a quick and easy vertical sight alignment.