TruGlo TG131G2 Fiber Optic Sight Set Glock 20/21 High - Red Front/Green Rear

The TruGlo TG131G2 Brite-Site is a fiber-optic handgun sight set purpose-built for Glock 20/21 pistols and related full-size Glock platforms. Cut in the high sight profile to clear raised front sights and compensators, the set produces bright, intuitive aiming points in daylight and ambient low-light conditions.

Each sight is built on a steel frame protected by the Black Nitride Fortress finish for corrosion resistance and long service life. The classic Tri-Dot aiming system pairs a single red fiber-optic front post with two green fiber-optic rear dots in a square notch, creating a high-contrast sight picture that picks up ambient light quickly. The snag-resistant sight profiles drop into standard holsters without modification, and the concealed fiber design protects the light-gathering strands from damage and holster wear.

Engineered as a direct factory-fit replacement for Glock 20, 21, 25, 28, 29, 30, 31, 32, 37, 40, and 41 pistols in the high sight configuration, the TG131G2 is well suited to duty, defensive, and target use where a tall sight picture is required over a raised front sight, compensator, or when running a sound suppressor. This set is not designed for use with MOS Glock pistols and is intended as a complete front/rear replacement of factory Glock high sights.