That is also my understanding.
As 3D printed guns become mainstream, oppressive governments will initially shift their concentration to restricting ammunition while scrambling to control 3D technology and materials.
Sort of sounds familiar.
A 1911A1 CAD file will become a controlled substance and the FBI Hostage Roasting Team will have a license to burn your house to the ground with you in it if the BATFE says they suspect you of possessing one.