[BwanaNdege]

They can't "charge you" for a "crime" committed outside their jurisdiction. They can only try to nab your customers when they try to get the ammo across the state line.

IIRC, several years ago, NYC was going after gun shops in Southern states for selling to NYC residents.

Is my memory faulty? Anyone remember the details?

[MortMan]

NYC was using its own agents to try and make straw purchases, which are illegal in the states where the dealers were operating, IIRC.