Meprolight Green front/Orange rear fixed night sights offer a clear and sharp sight picture that is unsurpassed by any other brand of sight, regardless of light conditions. Meprolight sights are the brightest sight available today. Additionally, all Meprolight front dots are purposely brighter than the rear dots, encouraging a focus on the front sight and beyond. Meprolight was the first manufacturer of Tritium sights to receive the prestigious ISO 9002 certification. +1/6.9 Fit 20,21,29,30,36,37,38,39.