My understanding of the history is that they are no longer government sponsored. They were govt sponsored while they were the DCM, but liberal gvt tried to shut down the program by pulling out government funding. The program reemerged as a totally self supporting organization called the CMP in 1996. All CMP money is generated through sales and donations.
To answer the question of are they legit? YES
Here are my 6 CMP rifles. 1 03a3, 2 - HRA, 1 SA, 1 Winchester, 1 IHC.