The difference between a perforated door and a notched door

First, the difficulty of mastering is different.

1. The notched door is not as accurate as the hole, especially for novices, it is difficult to grasp the essentials. The crosshairs must be in the middle of the door, not left and right, and it must be as high as the door. When aiming, focus your eyes on the crosshairs rather than on the door.

2. The hole is easier to get started than the notch, just put the crosshair in the middle of the hole, the smaller the aperture, the more concentrated the line of sight, and it is easier to get a good score.

Second, the field of vision is different.

1. The notched field of view is relatively wide, which is convenient for observation while aiming.

2. The smaller the hole of the hole. The higher the accuracy, the worse the field of view.

Third, the accuracy is different.

1. The notched door should not be too close to the eye, otherwise the gap will be too large and cannot form a comparison relationship with the crosshair. This also results in the door having to be placed a little forward, so that the aiming baseline is shorter and the accuracy is reduced.

2. The eye-catching door adopts small holes, and basically only the crosshairs and the target are visible, and the accuracy is very good.

Fourth, the scope of use is different.

1. The notched door is widely used, and almost all the pistols are notched doors. Rifles and submachine guns are older, such as AK47 and Bobosha, etc., which are still notched.

2. The eyelet sight is a kind of aiming device commonly used in modern rifles, especially on the stockless gun, which can effectively shorten the length of the whole gun, and the aiming essentials are simple and easy to learn.

The shutter is part of the sighting device of the gun. It is usually located on the ruler and forms an aiming baseline with the crosshair, which is used for aiming.

Notched door: there are square, triangular, semi-circular several kinds. Pros:

The advantage of the notched door is that it is quick to aim, and compared to the hole type, it has a wider field of view, making it easier to target moving enemies. Disadvantages: Compared with the hole type, the shooting accuracy of the door is generally poor.

Hole-type door: generally a circular hole. Advantages: Higher accuracy than notched doors. Disadvantages: Narrow field of view. (The opposite of a notched door).

The visibility of the war hole is small, but it is accurate, for example, M16 is the battle hole to illuminate the door, and the notch has a large visibility and can observe the surroundings, but the accuracy is slightly worse than the former, such as AK47 is a notch, and the average veteran likes to use the notch.

Aiming too close to the eye is likely to increase the aiming error. The visual error during aiming is proportional to the distance between the door and the eye, and the closer the door is to the eye, the greater the error.

You can use a pencil to test it, put the pencil upright in front of your eyes, aim at a fixed target in the distance, and then make the pencil move left and right at different distances, it can be found that compared with the long-distance target, when the pencil is close to the eye, as long as there is a small movement, there will be a large displacement, and the pencil is at a slightly longer distance, moving the same distance, you will feel that the deviation is much smaller.

Mechanical sights. A mechanical repentance letter is a metal observation device that can be used to position objects in a straight line, to assist in pointing objects at specific targets, and to use them in firearms, crossbows, or telescopes. However, optical aligners (both lenticular and reflective) are not included in this definition.

A typical mechanical sight consists of two components: a gate, which is close to the observer and mounted vertically on the aiming line; Reticle—close to the observation target, in a columnar, bead-shaped, or ring-shaped shape. The door of the open sight is grooved, and the door of the hole-type sight is a small round hole.

Civilian, hunting and police firearms usually have open sights; Most military battle rifles use bore sights.

It is generally a round hole.

Advantages: Higher accuracy than notched doors.

Disadvantages: Narrow field of view. (The opposite of a notched door).

Equipment: M16 series, Chinese Type 95 and so on.

There are square, triangular, and semicircular types.

Advantages: Kalashnikov (the founder of the AK family of guns) believes that the advantage of the notched door is that it can aim quickly, and that it is easier to target moving enemies than the hole door.

Disadvantages: Compared with the hole type, the shooting accuracy of the door is generally poorEquipment: AK series guns, most pistols, domestic 81 type, etc.