Iron sights are basic aiming devices used on firearms, consisting of a front sight and a rear sight. They help shooters align their line of sight with the target, allowing for accurate shooting without the need for advanced optics. Iron sights are typically made of metal and are often adjustable for windage and elevation. These sights are commonly found on various firearms, including rifles and handguns. While they may not offer the same precision as scopes or red dot sights, iron sights are durable, lightweight, and do not require batteries, making them a reliable option for many shooters.