To inject microchips, an injection tool is required. The injection gun facilitates the microchip injection for large herds. Microchips are placed in the magazine and loaded to gun. Injection gun has several advantages such as eliminating the need for disposable needles, increasing the speed of injection for a large number of livestock as well as complementary tasks. There are four types of injection guns: syringe, applicator, manual gun, and gun with magazine.