sf1 kraken is a weapon mainly used by police forces during riots to restore order. it is not lethal (hit causes only injury, not death). the weapon is specially made for usage against civilians without risking casualties (loss of life). the average distance of fire is about 30m, maximum is 100m and depends on type of bullet. sf1 kraken uses the energy of gases from .357 magnum blank cartidges (without a bullet) which are made by libra a.s. in the czech republic. it is also able to use several types of 59mm calibre bullets.