Abstract: A food dispenser gun, comprising a tube holding a quantity of an extrudable food product, a piston sealingly engaged with an interior of the tube, a rod coupled to the piston and an incremental dispenser engaged with the rod and the tube, the incremental dispenser comprising a trigger, or an advancement lever operable to move the rod in a first direction relative to the incremental dispenser in response to the trigger and a retrograde lock operable to prevent the rod from moving in a second direction, wherein the advancement lever and the retrograde lock are completely enclosed by a housing of the incremental dispenser. Other systems, devices and methods are disclosed.