AmeriGlo A-Cut/COA Combo Features The Ameriglo A-Cut/COA Combo Sight Set is engineered specifically to co-witness with slide mounted red dot optics on Glock Gen 5 9mm and .40 A-Cut pistols. The front sight stands .240 inch tall and .125 inch wide carrying a green tritium vial with a black outline for fast visual pickup in both bright daylight and low light conditions. Behind it the square notch rear sight measures .150 inch wide and is finished flat black to keep focus on the front sight and the optic s reticle rather than competing for attention. This elevated geometry allows the irons to sit at the correct height to align through the optic s window for a true co-witness. Because the irons double as a backup sighting system shooters retain a usable aiming reference even if the red dot optic loses power or is removed entirely. Ameriglo pre-applies threadlocker to the mounting screws and specifies a 16 inch pound torque setting simplifying correct installation on the Glock Gen 5 A-Cut slide. The combination of tritium illumination and a co-witness height profile makes this set a practical upgrade for duty concealed carry or competition pistols running a slide mounted optic. Shooters who want a dependable backup sighting solution alongside their red dot will find this Ameriglo set a straightforward fit. AmeriGlo A-Cut/COA Combo Specifications Manufacturer: Ameriglo Sights Model: A-Cut/COA Combo Compatible Hosts: Glock Gen 5 9mm/.40 A-Cut Sight Type: Tritium Front Sight Color: Green with Black Outline Rear Sight Color: Black Front Blade Width: .125 Front Blade Height: .240 Rear Notch Width: .150 Rear Notch Shape: Square Torque Specification: 16 in-lb Available At: GrabAGun