Iron Sight
Iron sights are a system of shaped alignment markers (usually metal) used as a sighting device to assist in the aiming of a device such as a firearm, crossbow, or telescope, and exclude the use of optics as in telescopic sights or reflector (reflex) sights. Iron sights are typically composed of two component sights, formed by metal blades: a rear sight mounted perpendicular to the line of sight and consisting of some form of notch (open sight) or aperture (closed sight); and a front sight that is a post, bead, or ring. Civilian defensive, hunting, and police firearms usually feature open sights, while many military battle rifles employ aperture sights. On many firearms the rear sight is adjustable for elevation or windage.
The earliest and simplest iron sights are fixed and cannot be easily adjusted. Many iron sights are designed to be adjustable, so that the sights can be adjusted for windage and elevation. For precision applications such as hunting or sniping the iron sights are usually replaced by a telescopic sight. Iron sights may still be fitted alongside a telescopic sight and are referred to as Back Up Iron Sights (Acronym B.U.I.S).
Read more about Iron Sight: Theory, Types of Sights, Enhancements, Adjusting For Accuracy
Famous quotes containing the words iron and/or sight:
“Should there be maniacs who raise the idea, they will encounter an iron fist which will leave no trace of such attempts.”
—Yitzhak Shamir (b. 1915)
“How could it be so fair, and you away?
How could the Trees be beauteous, Flowers so gay?
Could they remember but last year,
How you did Them, They you delight,
The sprouting leaves which saw you here,
And call’d their Fellows to the sight,
Would, looking round for the same sight in vain,
Creep back into their silent Barks again.”
—Abraham Cowley (1618–1667)