A hand ejector is a design of revolver handgun.
This variant is characterized by a cylinder that swings out on a hinge (known as a crane) and requires the pushing of a concentric rod toward the cylinder to eject the spent cases from the cylinder. The term "hand ejector" (though not the design itself) was originated by Smith & Wesson to differentiate this class of revolver from the "top break" design, in which rotating the barrel / cylinder up and away from the gun's frame would "automatically" eject the cases.