Yeah, the old M64's CDC released can be some decent guns if they were well maintained. A buddy of mine used to work as a firearms instructor as one of his jobs in a prison. I think he said they'd been using Speer 125gr GDHP +P for a long time, as that's what he said they kept at the range and what he shot in them.
Another friend of mine just picked up one of those CDC M64's from a local cop shop (who got some of them in stock). Being a factory-trained S&W revolver armorer, and a longtime S&W revolver shooter, he hand-selected one that's about as perfect as you could expect to find for a recycled duty gun. His had the same rubber grip stocks as the one pictured, too.
He invited me to try it out on our range. Nice K-frame .38 revolver.
Congrats.