Indeed, the old OEG. I’d almost forgotten those.
The Singlepoints make stupid money because they were used on some of the “ray guns” in the first Star Wars movie. Weirdo sci-fi/cosplay (what the heck is that on about????) folk buy them up to make inert replicas.
For the record, the ray guns in Star Wars include C96 Mauser pistol, L2A3 Sterling SMG, MG34 GPMG, MG42 GPMG and Lewis LMG. That has always made me smile.