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 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 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 <EOS>