FYI-Just got new issue of Gun Test magazine and they tested a Kel-Tec SU16CA against a couple other similar .223s. Kel-Tec has come out with a pistol grip/adjustable stock like most ARs today to fit the SU-16. Cost was stated @$129. and it includes a new trigger group. It looks good, and got good reviews. You can read Gun Tests online to check it out, I think.