I'm signed up for the CPSC recall notices and this just came through.
"This recall involves the “Crafters Square Hot Melt Mini Glue Gun” with product number “939701”. The gun dispenses hot glue and is intended for craft projects. The glue gun is black with an orange trigger and measures approximately 4 1/2 inches from the back of the gun to the tip. It has a 44-inch electrical cord attached. “Crafters Square” and “939701” are located on the guns’ packaging. “DS-010 Glue Gun” is written in raised letters on the handle of the gun."
Apparently it can short circuit and start smoking.
For more info... Dollar Tree Recalls Glue Guns Due to Fire Hazard