Edit
The tag denotes that a weapon in the picture has ironsights. Do not apply this tag if the weapon has an optic. This tag also does not apply to pistols or shotguns. This tag does not apply to backup or flip-up iron sights mounted on a rail. This tag only applies to permanently affixed, stock ironsights.
Examples of when to apply this tag:
/posts/756218
/posts/2531965
/posts/1158638
/posts/2528329
/posts/2523841
/posts/2522711
Examples of when NOT to apply this tag:
Nobody here but us chickens!