An updated version of the Model A, circa 2000:
featured an Alumalite resin cast handle,
fully integrated sound chip
and miniature ultra-bright LED.
The updated Model B featured similar internal components; both rayguns included copper-wire-wound cylinders to enhance their futuristic look.
[Pictured above: the Model A, at left, and the Model B, at right. Pictured below: Isher’s fantastic handle, designed for a new millennium in 2000.]
As per the original Isher defensive weapons internal electronics were hand-soldered and based on the 555 integrated circuit. Timing is everything, they say… and certainly the 555 IC has been the work-horse of the Isher stable for over 30 years.