As far as I know, it was never sold nor fired beyond testing, but that's not authoritative knowledge, it's pure speculation. While I'm speculating, I dare say anybody buying it would be reluctant to fire the thing. After all, who wants to be the one who bought it when it malfunctions? That'd make for a bad day on the range with the RSOs laughing and whispering about the guy with the $100k rifle that doesn't work....