What factors should be paid attention to when
In operation, one hand usually holds the shield and the other hand uses weapons such as guns. So what is the weight of the bulletproof shield? Will it be difficult to use a shield with one hand? What protection levels does it have? The following XINXING police equipment will give you a detailed introduction to the issues that you need to pay attention to when selecting and using bulletproof shields:
1. Protection level
The protection levels of bulletproof shields are NIJ IIIA, NIJ III and NIJ IV.
NIJ IIIA level: can defend against pistols, usually able to resist the threat of 9 mm FMJ and .44 MAGNUM JHP or lower level weapons.
NIJ III level: usually able to withstand the threat of 7.62 x 51 mm M80 FMJ or lower level weapons.
NIJ IV level: It can defend against rifle armor-piercing projectiles, usually from 7.62 x 63mm M2 armor-piercing projectiles (AP) or lower-level weapons.
Two, use type
There are three main types of bulletproof shields currently on the market: hand-held bulletproof shields, hand-held cart type bulletproof shields, and special bulletproof shields.
Hand-held shields are usually equipped with two handles on the back, which can be used by left-handed or right-handed users at the same time, and are also equipped with bullet-proof glass observation windows or sight glasses to facilitate observation of the external situation.
Hand-held shields are mainly suitable for combat scenarios with more complex terrain. For example, hand-held bulletproof shields are more flexible to use in narrow stairs or passages, and can be better matched with guns and other weapons.
Hand-held cart-type bulletproof shield:
The trolley-able bulletproof shield is equipped with a trolley, which is more labor-saving for long-distance movement. In addition, it is equipped with a handle on the back like the hand-held bulletproof shield, which can be used by hand. It is also equipped with a bulletproof glass sight. Generally, shields with higher defense levels are usually very heavy, and a cart is required for long-term use.
The hand-held cart type bulletproof shield is mainly suitable for relatively open and flat combat scenes. When in use, the shield can be placed on the cart to move freely for a long distance, and it is more labor-saving. It can also be used hand-held when the cart cannot be used due to changes in space and terrain.
Special bulletproof shield:
Special bulletproof shields usually have special structures in order to achieve more diversified functions. For example, the ladder-type bulletproof shield has a special structure behind it that can be turned into a ladder to deal with complex terrain, such as helping users to view and control the environment at higher altitudes when necessary. At the same time, the bottom of the shield is also equipped with wheels, making it easier to move and save effort.
There are also many kinds of shields with different special functions on the market, such as shields that can be quickly deployed and concealed shields that can be turned into briefcases.
Three, size and weight
The larger the size of the bulletproof shield, the larger the protective area, but the higher the weight. If the size is too large, the shield will be too heavy, and it will be more difficult to use, which will affect the flexibility of the user; and if you blindly pursue light weight and choose a smaller shield, then its small protective area may not be effective for users. Protection.
Like the bulletproof inserts, there are many materials used to make bulletproof shields. At present, they mainly include metals, ceramics, and pure bulletproof fibers. Metal shields were the first to be used, and their weight was large and their protective performance was not very high. But if you only need to deal with low-level threats, such as pistols, or if you only need to use them fixedly, it is also a good choice. With the development of material science, people have begun to use ceramics to make shields. Ceramics have better ballistic properties and weight. It is much lighter than metal. Bulletproof fibers such as PE and aramid are high-performance bulletproof materials developed in recent decades, which can be regarded as a great leap in material application. Their appearance greatly improves the defensive ability of bulletproof shields while reducing its weight. However, the shielding ability of pure bulletproof fiber is limited, and it cannot achieve the defense ability of rifle armor-piercing bullets. At present, most bulletproof shields are made of ceramic and fiber materials and other materials. According to a special design, it can achieve a good protective effect.