A type of [[gun|firearm]] iron sight that can be flipped up or down. Typically comes with a hinged pin under it. Often serving as backup sight for [[weapon]]s with [[optical sight|optics]]. 

h1. See also
* [[List of Weapons]]

h1. External links
* "Wikipedia: Iron sights":https://en.wikipedia.org/wiki/Iron_sights
flip-up sight