This mount is compatible with Trijicon's RMR Micro Red Dot (or any micro red dot that shares the same footprint), and features a Bright & Tough rear sight built directly into the mount itself, as well as a Bright & Tough front sight. The Bright & Tough Iron Sights have been engineered to an optimal height, allowing the front sight to be seen through the window of the RMR Micro Red Dot. The ability to co-witness with the iron sights greatly increases your ability to acquire the red dot sight, and can be used with a suppressor or as a back up aiming solution.