An electric hot melt glue pen for melting a glue stick includes a pen housing having a stick passage, a heating assembly including a heating tube and a heating sleeve layer which is wound around the heating tube for heating the heating tube, a control assembly including a control circuit board, and a driving assembly arranged to drive the glue stick to move forward toward the heating tube along the stick passage.

A glue gun including a housing, an actuator, a carrier, and a stroke adjustment mechanism. The housing extends along an axis and includes a first end and a second end opposite the first end. The first end includes an outlet configured to dispense glue from the housing. The actuator is coupled to the housing. The carrier is supported by the housing and is configured to support a glue stick. The carrier is coupled to the actuator and movable a distance along the axis in response to actuation of the actuator to guide the glue stick toward the first end. The stroke adjustment mechanism is coupled to the carrier to adjust the distance that the carrier is movable along the axis.