Open Sights on Rifles
Terminology: Iron Sights, Open Sights, Peep Sight, Diopter, Aperture, Blade Sight, Jeager, Leaf, Folding Leaf, Tang Sight, Globe Sight, Windage Stem
Discussion on the types and variety of open sights
Sight Types
Precision / Competition Shooting - Target aperture sights are designed for maximum precision. The rear sight element (often called diopter) is usually a large disk (up to 1 inch or 2.5 cm in diameter) with a small hole in the middle, and is placed close to the shooter's eye. Shooting diopters offer windage and elevation corrections. The complementing front sight element may be a simple bead or post, but is more often a globe type sight, which consists of a cylinder with a threaded cap, which allows differently shaped removable front sight elements to be used.
Common Commercial Hunting - The rear sight is known as a blade sight often on these types of firearms.
Illustration: Advantage of Open V Sight for Hunting Wild Game.
Although many iron sights on hunting rifles is completely flat, the shallow V style is becoming more popular. For hunting wild game you will find that the shallow V style rifle sight with a high contrast triangle will conceal less of the animal you are attempting to take down. The old fashioned buckhorn sight frequently found on 19th Century rifles tends to conceal two-thirds of the animal or more. Although Peep sights with shallow diopters can reveal much of the animal, target acquisition may be more difficult. Hunters tend to prefer the shallow V type sight.
Illustration: View of Rifle Sight on Barrel
Aiming With Iron Sights
Illustration: Align the front sight level with the top of the rear sight over your target.
How to Sight in a Gun With Adjustable Diopter
You are moving the rear diopter in the direction you wish the bullet to go, which is opposite the direction to which it is off.
- If you are shooting high (elevation) lower the rear aperture.
- If you are shooting to the right, move the rear aperture left. (typically this is a counter-clockwise turn)
