Magnum

The Magnum, is a weapon in all three Halo games. In scenes filmed in Halo: Combat Evolved, characters are usually shows wielding the Magnum as the gun lowering technique was not present in that game. Any other weapon would look bit aggressive in passive situations. With Machinima in mind, the programmers of Halo 2 decided to implement gun lowering into the game, therefore the characters could be holding most weapons without looking too aggressive.