The pistol in question was a prototype double stack 9mm built as a technology demonstrator by Colt. I don't remember if it actually functioned or not, but I would never bet my life on it working in the gravest extreme. If you want to see how well these “smart” guns are received, inflict them on your local and state cops — if you dare.
The Magna Ring was for S@W revolvers. just do a google search and one well find a lot of info