ATOMIC 5 PISTOL - NEWELL - USA
Red plastic space gun. This odd shaped gun is big at the back, reducing in diameter towards the front of the stubby barrel. This shape allows the pre-loading of a number of balls. There are small sights on top. The gun shoots table tennis balls, red ones are provided: the plunger at the rear is pulled back to cock the gun.
The first sighting is in the Gray Hardware and Miles Kimball catalogs for 1950.