http://www.unitedgungroup.com/auction/detail/auction/10/slug/george-zimmerman-s-gun-used-2-26-12
Update: Auction was pulled off from Gunbroker, but is back on another place
https://www.unitedgungroup.com/auction/detail/auction/9/slug/george-zimmerman-s-gun-used-2-26-12
George Zimmerman is putting up the gun he used to defend himself on Gunbroker.
While it can be a prank, FOX Orlando seems to back up the news
http://www.fox35orlando.com/news/local-news/140127772-story
Auction will start on 11am Thursday, May 12th and last for 24 hours.