The Troy Battle Sights have set a standard for design and quality from which all other back up sights are judged. They are easily installed and sit at the exact height as factory sights. There are no levers or springs to fumble with, sights are easily deployed under stress. The cross locking system ensures your sights will remain zeroed in the most extreme combat conditions. To fold simply press the release button on the left hand side. 

Also available in FDE