GLOCK Glock Bold Sights By Ameriglo, Night Sight, .165 Front Fits Gen3 and Gen4 G20, G21, G29, G30, G31, G32, G36, G40, G41, Green Tritium with Orange Outline 47283 The new GLOCK BOLD sights by AmeriGlo combines the best features of GLOCK sights. A durable" bright-orange outline surrounds a Swiss made green tritium insert" creating a fast" eye-catching front sight. Paired with a serrated" traditional squared-notch tritium rear sight" the BOLD set is ideal for all environments. Machined in the USA" the BOLD series set presents an accurate and easy-to-acquire sight picture.