The AmeriGlo GL691 is an exceptional product from AmeriGlo, a company dedicated to enhancing your shooting proficiency both on the practice range and beyond. The AmeriGlo Optic Compatible Sight Tall Suppressor Sights set stands out in its ability to offer an accurate, elevated co-witness sight picture. This is particularly useful for slide-mounted red dot optics and suppressors; and doubles as a trustworthy back-up sight system.The design of this 3XL Tall model comes in a striking green tritium front sight with a lumigreen outline. This combination is contrasted beautifully with a flat black rear sight and black finish, providing both style and function.This innovative sight is universally compatible across all Glock Gen 1-5 models and fits seamlessly onto Glock MOS slides.