I bought one last June or July, new, in .40 that used the Glock 22 mags. It was supposed to be for my wife, but she never liked the operating mechanism...kept hanging up in her sleeve. Sold it around March of this year for more than I paid for it. Mama is REALLY happy with her new Hi-Point carbine, though, at a much cheaper price. Those are very common around here.
I've seen 1-2 of the Sub-2K's at my area's larger shows, such as Tyler, TX/Shreveport-Bossier City, LA. Haven't checked price or condition.