An X-launcher is a portable magnetic launcher that hurls explosive missiles, bombs or special munitions packages, such as Arc, Blur, Scramble, and Scoot. They are bulky weapons, and their regular explosive ammunition resists full compression due to the charge. They are of limited value on the battlefield unless they can be emplaced or set-up in a static position. However, they are excellent for lobbing shots onto fixed targets. The bombs themselves are usually guided either by internal sensors or by means of mobile targeting probes. The standard X ammunition contains high-concussion explosives – the X simply standing for explosive.