A handheld cigarette-making machine comprising: a base; a member mounted in the base for sliding longitudinally a throw distance between a distal loading position in which loose tobacco may be placed in the machine and a proximal filling position in which the tobacco fills an empty cigarette tube having a predetermined first shorter empty cigarette tube tobacco-receiving portion or a predetermined second longer empty cigarette tube tobacco-receiving portion, the sliding member having an elongated cavity for receiving the loose tobacco and a cigarette tube holding assembly for attaching an empty cigarette tube; a top member mounted to the sliding member for pivoting between an open position and a closed position, the top member having an elongated tamping member attached to its lower surface to compress the loose tobacco in the sliding member cavity when the top member is pivoted to its closed position, the tamping member having a fixed length corresponding to the first shorter empty cigarette tube tobacco-receiving portion; and an adjustment member mounted in the sliding member for adjusting the length of the elongated cavity as necessary to fill empty cigarette tube tobacco-receiving portions of the two different predetermined lengths without varying the throw distance of the sliding member, the adjustment member being mounted in the sliding member for movement between predetermined proximal and distal positions corresponding to the two predetermined empty cigarette tube tobacco-receiving portions for adjusting the length of the elongated cavity for receiving an amount of loose tobacco in the elongated cavity corresponding to a chosen one of the two predetermined empty cigarette tube tobacco-receiving portions. a base; a member mounted in the base for sliding longitudinally a throw distance between a distal loading position in which loose tobacco may be placed in the machine and a proximal filling position in which the tobacco fills an empty cigarette tube having a predetermined first shorter empty cigarette tube tobacco-receiving portion or a predetermined second longer empty cigarette tube tobacco-receiving portion, the sliding member having an elongated cavity for receiving the loose tobacco and a cigarette tube holding assembly for attaching an empty cigarette tube; a top member mounted to the sliding member for pivoting between an open position and a closed position, the top member having an elongated tamping member attached to its lower surface to compress the loose tobacco in the sliding member cavity when the top member is pivoted to its closed position, the tamping member having a fixed length corresponding to the first shorter empty cigarette tube tobacco-receiving portion; and an adjustment member mounted in the sliding member for adjusting the length of the elongated cavity as necessary to fill empty cigarette tube tobacco-receiving portions of the two different predetermined lengths without varying the throw distance of the sliding member, the adjustment member being mounted in the sliding member for movement between predetermined proximal and distal positions corresponding to the two predetermined empty cigarette tube tobacco-receiving portions for adjusting the length of the elongated cavity for receiving an amount of loose tobacco in the elongated cavity corresponding to a chosen one of the two predetermined empty cigarette tube tobacco-receiving portions.