I actually agree, the x button, may actually be used to change the weapons firing mode, like burst-fire to maybe single-shot.... Noone knows but Bungie themselves :( But all will be revealed in the Halo 3 multiplayer Beta :D :D Speaking of which, i can't wait!!! lol - Anyway... Once again, brilliant update! ;). I too, can't wait to get my hands on it... Actually, let me rephrase that... I can't wait to get my hands on any weapon in Halo 3!!! lmao...