Additional provisions: The self-background check should be only to purchase a firearm or firearms. The description of the firearm should never be furnished to the Gov't. If under 21, the authorization could say "Authorized to purchase rifle or shotgun" (until Federal law is changed or overturned); if over 21, "Authorization to purchase rifle, shotgun, or handgun."
Make the background check valid to purchase any number of firearms from any number of persons within the 30-day authorization period.
While we're at it why not lower the age for buying a handgun to 18.
And deny Federal law enforcement funding to any state which doesn't recognize any other state's concealed weapon permits.
Add these provisions, and see how Schumer, Bloomberg and their ilk squirm. Now THEY'LL be the ones blocking common-sense gun laws!