From the ubiquitous Wikipedia:
“Colt Defense LLC ... was split off from Colt’s Manufacturing Company in 2002 in order to focus on the military, law enforcement and security markets.”
So ... this is not the entire company but rather the contract-less defense operation and it makes sense that they would withdraw life support and issue a DNR.
AFAICT, Colt manufacturing continues to stumble along.
My bad, I now see that in 2013 Colt Defense absorbed Colt Manufacturing