The BIS 43X/48 (backup iron sight for the Glock G43X/G48) is a joint development by AmeriGlo and FCD. Specifically designed for the Glock G43X and G48 models, these sights are derived from the highly regarded AmeriGlo GL-527. The front sight has a height of 0.45 inches, while the rear sight measures 0.554 inches in height. This sight set provides a lower 1/3 co-witness with the Trijicon RMRcc when paired with our OPF-G43X/43, RMRcc on Glock's G43X and G48 models. Precision-engineered for optimal accuracy, this sight features a serrated design to reduce glare and enhance target acquisition