The underbarrel grenade launcher is installed on a firearm as an additional unit and is used for destruction of unarmored vehicles and enemy manpower, using special ammunition for this - grenade launchers shots. Surely, many are interested in exactly how this modest-looking device works and what its capabilities are in practice.
Under-barrel grenade launchers are capable of throwing grenade shots at a distance of up to 400 meters. Depending on the specific model, ammunition can be unitary sleeveless or caseless, and will also be of a different type in terms of the striking element (filling). Most often, grenades are equipped with an inertial shock fuse with a pyrotechnic semi-fuse with a self-destruct mode.
This means that the grenade gets into a combat platoon only after a certain time, which makes it impossible to fire from an under-barrel grenade launcher at close distances. As a rule, a grenade is activated by a timer only after 25 meters of flight.
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The grenade launcher works according to the same principles as any other modern firearm. The fighter pulls the trigger, takes aim, and then releases the hook. Further, there is an interaction with the firing mechanism, the hammer breaks off the hook, and the firing pin breaks the ammunition capsule, provoking an explosion resulting in a grenade shot. The general principle of action is strongly reminiscent of a revolver.
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If you want to know even more interesting things,
then it is worth reading about why on some Kalashnikov models the butt made with pimples.
A source: https://novate.ru/blogs/010820/55519/