A progressive cavity pump comprising: a pump housing extending in a longitudinal direction and a transverse direction, the pump housing forming a shoulder portion; a pump nozzle extending from the pump housing; a progressive cavity pump assembly; a drive mechanism driving the progressive cavity pump assembly; a trigger assembly to be engaged externally by an operator of the pump to activate the drive mechanism for advancing a liquid product through the pump via a flow path for delivering the liquid product, the flow path being formed by a lower tube extending from a bottle interior into the pump, through the pump assembly and through an upper tube into the nozzle, the lower tube including a lower tube inlet open to intake the liquid product and a lower tube outlet for delivering the liquid product to the pump assembly, the upper tube including an upper tube intake connected to the pump assembly and an upper tube outlet disposed in the nozzle for dispersing the liquid product from the pump; wherein the progressive cavity pump assembly further includes a stator and a rotor which cooperates with the stator to dispense the fluid product from a bottle (12, 14) through the pump such that the pump allows dosing of specific amount of the liquid product per trigger pull, wherein the drive mechanism includes a forward drive yoke and a rear yoke and characterized in that the forward drive yoke includes a pivot end movably attaching to the trigger assembly and forward drive arms engaging a gear portion being part of the rotor, each forward drive arm includes drive pawls to engage teeth of the gear portion, the drive pawls include drive pawls geometry to engage and mesh with the teeth of the gear portion to drive the rotor in a drive direction about a drive axis, with the pivot end being coupled to the trigger assembly which is activated when a trigger is pulled. a pump housing extending in a longitudinal direction and a transverse direction, the pump housing forming a shoulder portion; a pump nozzle extending from the pump housing; a progressive cavity pump assembly; a drive mechanism driving the progressive cavity pump assembly; a trigger assembly to be engaged externally by an operator of the pump to activate the drive mechanism for advancing a liquid product through the pump via a flow path for delivering the liquid product, the flow path being formed by a lower tube extending from a bottle interior into the pump, through the pump assembly and through an upper tube into the nozzle, the lower tube including a lower tube inlet open to intake the liquid product and a lower tube outlet for delivering the liquid product to the pump assembly, the upper tube including an upper tube intake connected to the pump assembly and an upper tube outlet disposed in the nozzle for dispersing the liquid product from the pump; wherein the progressive cavity pump assembly further includes a stator and a rotor which cooperates with the stator to dispense the fluid product from a bottle (12, 14) through the pump such that the pump allows dosing of specific amount of the liquid product per trigger pull, wherein the drive mechanism includes a forward drive yoke and a rear yoke and