This is a risky deal. They will get rich righties to buy in saying it will eliminate guns from desperate(poor under $300k /yr) criminals while protecting sportsmen(think H&H or Purdey pricing).
Any tax is infringement...any named ban is infringement...any additional requirement to buy is infringement.
Remember John Lott, statistician, tells us all mass shootings happen in "gun prohibited" areas...remember, the Oregan mall shooting tells us what happens with CCW thrown in the mix...
MORE GUNS = LESS CRIME