The Ameriglo Flat Black .451" H .150" Notch Rear Sight is designed to fit all Glock models, providing a precise and reliable aiming solution. The flat black finish minimizes glare, enhancing sight picture clarity. With a .451-inch height and .150-inch notch, this rear sight offers a clear and accurate sight picture, making it ideal for both self-defense and competitive shooting. Crafted from high-quality materials, the Ameriglo Flat Black Rear Sight ensures durability and consistent performance. Ameriglo Flat Black .451" H .150" Notch Rear Sight for Glock GL-428