Don't know anyone who's tried one. My bet is that the DPMS has superior quality control. From a glance, the DPMS looks like the old Colt unit, and it just may be a copy of one. The mags are probably not interchangable.
Since it's DPMS, it'll probably have a better and more uniform quality control and it'll probably become just as common if not more so. I bet you won't have to screw with it 1/10th as much, if at all, to get it working reliably. At the very least, Ciener will have to get their act together a bit better due to the competition.andy said:why bother? It's neither more accurate, more reliable, cheaper or more readily available than is the Ciener.