Top U.S. auctioneers refused to sell gun from Trayvon Martin shooting

The handgun used in the shooting death of Trayvon Martin is seen this handout photo provided by the State Attorney's Office on May 17, 2012.

USA: Two of America's leading auctioneers of guns said they refused on ethical grounds to handle the sale of the 9 mm pistol that George Zimmerman used to kill unarmed black teenager Trayvon Martin.

The firearm is so toxic that another auctioneer, the man who sold the revolver used to kill John F. Kennedy's assassin, said he would want no part of it had he been approached by Zimmerman.