Really? I have a feeling that 18 U.S.C. § 922(o) and 922(r) couldn't survive a court case.
This is the 'Sporting Purposes' section of Title XVIII in the US Code of Justice brought in by the 1968 Gun Control Act.
After McDonald's RKBA incorporation under the 14th Amendment's Due Process clause, how can any individual civil right related to firearms be mitigated by or reconciled with it's suitability for duck hunting?
Give it a few more years and some careful strategy backed up with a goodly amount of partisan funding to bring the case forward and much of the 1968 GCA and the Hughes Amendment to 1986 FOPA is as dead as fried chicken dinner.
Knock those laws on their asses and the job of BATFE Field Agent will be about as exciting a career as Dept. of Agriculture's "Grain Silo Meter Tare Weight Calibration and Certification Technician I"
Hell, Lets just ban Chapter 4 of 18 USC....that would make liberal’s heads explode.