The movie was on one of those "100 Sci-Fi Movies!" DVD collections. They're a great resource for PD titles, though they're typically very old. This is a rare, discarded action flick from 1990. I knew from the first frame it needed a riff.
By the way, my next feature-length riff will be Jerry Warren's "The Incredible Petrified World" with John Carradine. I have a feeling you're familiar with that one.