The RA2B231G by Rival Arms reflects the combined efforts of expert machinists, designers, and coaters with an aim to grant you superior quality products. This specific set of night sights displays a U-Notch rear sight design known for its quick and precise performance. Constructed from CNC machined stainless steel, these night sights bear testimony to longevity and robustness. An additional assurance comes with a 12-year limited manufacturer\'s warranty. Compatibility extends to Glock models 42/43.