Ameriglo Tritium 2-Dot Rear Handgun Sight for Glock 42/43/43x/48 Green with White Front 21B03F7C. Choose from a variety of heights notch widths and notch shapes. Green Tritium 2-Dot White Outlines .256" H .165" Sq Notch Fits Glock 42 43 43X 48 models Features of Ameriglo Tritium 2-Dot Rear Handgun Sight for Glock 42/43/43x/48 Green with White Front: Proven rugged illuminated Tritium Rear night sights Wide range of heights notch widths and notch shapes Green Tritium 2-Dot White Outlines Fits Glock 42 43 43X 48 models Package Contents: Ameriglo Tritium 2-Dot Rear Handgun Sight for Glock 42/43/43x/48 Green with White Front Ameriglo GL-8430R: Tritium 2-Dot Rear Handgun Sight for Glock 42/43/43x/48 Green with White Front 21B03F7C