"Phoenix police holds gun buyback before gun resale law takes effect"
Jurist May 5 
http://jurist.org/paperchase/2013/05/phoenix-police-holds-gun-buyback-before-gun-resale-law-takes-effect.php
"The Phoenix, Arizona police department [official website] on Saturday held the first of three gun buyback programs [press release] in an attempt to complete the buyback before a law [HB 2455, text] signed by Governor Jan Brewer [official website] on April 29 that requires surrendered weapons to be sold instead of destroyed takes effect. . . . "