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Stun grenade

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A stun grenade is a specialized explosive device designed for non-lethal use. It is known by many different names. Some people call it a flash grenade or a flashbang. Others use terms like thunderflash or sound bomb. The primary purpose of this tool is to temporarily disorient an enemy. It achieves this by attacking the senses of a person. This makes it useful for police and military forces around the world.

M-84-Flash-Bang-Grenade
M-84-Flash-Bang-Grenade

These devices are most often used in specific tactical situations. They are common in close-quarters combat where space is limited. They are also used during door breaching operations. Another common use is for riot control. In these scenarios, the goal is to stun or distract targets. This allows security forces to move or complete a task. The device provides a sudden window of distraction.

22nd MEU force recon platoon completes advanced combat tactics training 130630-M-HZ646-323
22nd MEU force recon platoon completes advanced combat tactics training 130630-M-HZ646-323

The mechanism of a stun grenade relies on a powerful chemical reaction. The interior of the device contains a pyrotechnic filler. This filler is a metal-oxidant mix. It usually consists of magnesium or aluminium. To make the mixture burn, an oxidizer is added. Common oxidizers include potassium perchlorate or potassium nitrate. When the device detonates, this mix creates a massive release of energy. This energy manifests as both intense light and sound.

M-84-Flash-Bang-Grenade
M-84-Flash-Bang-Grenade

This energy reaches very specific and intense levels. Upon detonation, the grenade produces a blinding flash of light. This flash is approximately 7 megacandela. A megacandela is a unit used to measure the brightness of a light source. Simultaneously, the device creates an incredibly loud bang. This sound reaches levels greater than 170 decibels. A decibel is a unit used to measure the intensity of a sound. These two factors work together to overwhelm the senses.

22nd MEU force recon platoon completes advanced combat tactics training 130630-M-HZ646-323
22nd MEU force recon platoon completes advanced combat tactics training 130630-M-HZ646-323

The physical construction of the grenade is very different from a standard fragmentation grenade. A fragmentation grenade is designed to shatter into many pieces. In contrast, a stun grenade is built to remain intact. The casing is designed to avoid causing fragmentation injuries. However, the casing is not completely solid. It features large circular cutouts. These holes are essential to the device's function. They allow the intense light and the loud sound to escape easily.

M-84-Flash-Bang-Grenade
M-84-Flash-Bang-Grenade

The history of the stun grenade begins with military training needs. Originally, these devices were developed to simulate explosions. This allowed soldiers to practice in a controlled way. The British Army Special Air Service, or SAS, was the first to use them. Their counterterrorist wing used them in the late 1970s. Since that time, their use has spread globally. Now, both police and military units use them for various operations.

22nd MEU force recon platoon completes advanced combat tactics training 130630-M-HZ646-323
22nd MEU force recon platoon completes advanced combat tactics training 130630-M-HZ646-323

Despite being labeled as non-lethal, stun grenades carry significant hazards. They are capable of causing serious harm if used improperly. For example, they can cause permanent hearing loss. The concussive blast can also result in various physical injuries. There is also a risk of death if the device detonates in very close proximity to a person. Additionally, the heat from the explosion is quite high. This heat can ignite flammable materials in the area.

22nd MEU force recon platoon completes advanced combat tactics training 130630-M-HZ646-323
22nd MEU force recon platoon completes advanced combat tactics training 130630-M-HZ646-323

Real-world events have shown how these hazards can manifest. During the 1980 Iranian Embassy siege in London, stun grenades were used. During that specific event, the grenades caused fires to break out. This serves as a reminder of the potential for secondary dangers. While the device is meant to stun, the environment must be considered. The combination of heat, sound, and light makes it a powerful and complex tool. Understanding these risks is vital for those who use them.

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File:M-84-Flash-Bang-Grenade.jpg
M-84-Flash-Bang-Grenade.jpg
File:22nd MEU force recon platoon completes advanced combat tactics training 130630-M-HZ646-323.jpg
22nd MEU force recon platoon completes...
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