The governor of Arizona has signed a law that requires guns acquired in gun buy-back programs to be sold. If a police department in Arizona buys your gun in order to reduce the likelihood that it will be used to commit a crime (such as shooting a police officer), they can’t destroy it. They have to sell it to a gun dealer, who can then resell it and return it to its rightful place in the community.

Police had argued that they were allowed to destroy guns acquired in such programs, even though an earlier Arizona law required that they sell any guns seized during crimes. The NRA and gun fanatics argued that destroying valuable weaponry is wasteful.

http://bigstory.ap.org/article/ariz-bill-requiring-resale-buyback-guns-signed