An example of a ballistic knife.
A ballistic knife is an automatic knife with a detachable blade that is pushed out of the handle. This happens with a mechanism driven by a spring or gas pressure.
Ballistic knives were produced by the company Ostblock in the Soviet Union. The story is that these knives were widely used by Spetsnaz, the Soviet army's elite groups, but there is no direct evidence or . The knives were designed to be used as unobtrusive weapons for situations where a firearm was unsuitable. The blade can be used while the blade is attached to the handle, or can be shot by pulling a pin and pushing a button.
The spring in these knives is powerful enough to bridge the blade at a speed of 63km / h at a speed of six meters or more.
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