The GL-381 AmeriGlo Classic Glock Tritium Night Sight green front and yellow rear dots with white outline fits Glock Models G42, G43. G43x, and G48. CNC machined sight sets feature a three-dot aiming system with glowing dots for low light shooting. AmeriGlo sights are machined from US-made bar stock steels and assembled using Swiss-made tritium light sources. AmeriGlo sights are used worldwide by law enforcement, military, defense minded free citizens, and recreational shooters. The "Classic" AmeriGlo models feature a white outline surrounding the tritium dots for increased visibility.