Ameriglo GL121 Classic Tritium Sight Set for Glock Gen 1-4 10mm/.45/.357 - Green Tritium Front / Yellow Tritium Rear 3-Dot

The Ameriglo GL121 is a Classic Tritium 3-dot night sight set purpose-built for Glock Gen 1-4 pistols chambered in 10mm, .45 ACP, and .357 SIG. The set uses a rugged steel sight body finished in black, designed to drop directly into the factory dovetails of compatible Glock slides without permanent modification.

The front sight carries a green tritium lamp framed by a crisp white outline, while the rear sight uses two yellow tritium lamps with white outlines to create the traditional high-contrast 3-dot sight picture. The differing front and rear colors let your eye lock onto the front sight instantly in low light or total darkness, giving you faster, more accurate target acquisition than standard all-green night sight configurations.

Because tritium is self-powered, the GL121 requires no batteries or switches - the sights glow continuously for years, making them ideal for concealed carry, home defense, and duty use where conditions can change in an instant. Whether you run a G20, G21, or one of the .357 SIG variants, this set gives you a reliable 24-hour aiming solution on your Glock pistol.