Although there are several different types of Masers, most have a similer appearence and all function in about the same way. The Maser is basically a large tank that supports a laser firing system in the form of a large arm ending in a satelite-like head. Usually, the arm lowers down when the tank is moving, and rises to take aim at the intended target. The head then fires a steady beam that resembles a laser beam or stream of lightning. The beam has proven to be very effective against some monsters, the best example being Gaira. Masers were also very effective in driving off such monsters as Anguirus and Godzilla (only in The Return of Godzilla), and a variation of the Maser, called the DAG-MB96 or ULT Laser Cannon (which appeared in Godzilla vs. Destoroyah (1995)) even succeded in killing the monster Destoroyah at the film\'s climax. However, most of the time, the Masers fell before the might of the monsters. source