Sometimes called the Astrophaser, the Sound-O-Power Astro-Gun by Marx, was a super cool Ray Gun toy by Marx. It has great lines and good hand feel, but the real exciting thing about it were the crazy sounds. Nothing like a toy that makes electronic noises. They drove parents and siblings insane, while at the same time, made you the envy of the neighborhood.
I have not seen one since I was kid and the one I played with was third hand from a cousin who was “done with it”. The sound was a bit warped, but it still was pretty magical and I always keep my eyes open for a working model at garage sales.