This is good that it works there.

But my state made a law so gun buybacks won't work here. The government doing the buyback must offer them for sale to at least 2 gun dealers before destroying the guns that the dealers do not want. The working guns will just get resold again.

This is the relevant law:

Surrendering a firearm to a political subdivision, valuable consideration prohibited, exceptions. — No county, municipality, or other governmental body, or an agent of a county, municipality, or other governmental body, may participate in any program in which individuals are given a thing of value in exchange for surrendering a firearm to the county, municipality, or other governmental body unless:

  (1) The county, municipality, or governmental body has adopted a resolution, ordinance, or rule authorizing the participation of the county, municipality, or governmental body, or participation by an agent of the county, municipality, or governmental body, in such a program; and

  (2) The resolution, ordinance, or rule enacted pursuant to this section provides that any firearm received shall be offered for sale or trade to a licensed firearms dealer. The proceeds from any sale or gains from trade shall be the property of the county, municipality, or governmental body. Any proceeds collected under this subdivision shall be deposited with the municipality, county, or governmental body unless the proceeds are collected by a sheriff, in which case the proceeds shall be deposited in the county sheriff's revolving fund under section 50.535 . Any firearm remaining in the possession of the county, municipality, or governmental body after the firearm has been offered for sale or trade to at least two licensed firearms dealers may be destroyed.