So we can read about it at Kel Tec. It is priced.
At Shot one of their reps mentioned delivering it unsuppressed so we could take delivery of an operating rifle while waiting on a stamp. This option is not discussed and I expect that concept dead.
I want one. I hope @ChrisNelson gets us a price on an M Series upgrade. I need to compare cost of $995 Sub CQB plus trigger stuff and bolt tube cover for a multimag.