Glock A-CUT/COA Combo Set - Slimline AMERIGLO Optic Compatible sets provide a precise, elevated co-witness sight picture for slide-mounted red dot optics and serve as reliable back-up sights. Fits: Glock 43X and 48, A-CUT Specs: Fits Make: Glock Fits Model: 43X and 48, A-CUT Front Blade Width: .115 in. (2.92mm) Front Blade Height: .240 in. (6.1mm) Rear Notch Shape: Square Rear Notch Width: .150 in. (3.81mm)