Corbett has now been charged with seven counts of machine gun possession, two counts of assault weapons possession and 10 counts of possession of a destructive device, in addition to stalking and burglary.
Corbett, who faces up to 12 years in jail, pleaded not guilty to breaking into the 49-year-old actress' home.
Bullock has obtained an emergency protective order against the suspect, requiring him to remain at least 200 yards away from her.
2014: The Year in Fashion [PHOTOS]
Polly Bergen, Emmy Award-winning actress, dies