Police have taken two guns off the streets this year, but appealed for help to find other lethal weapons still being used by gangsters.The Royal Gazette reported this week that detectives know exactly which three guns were used to shoot seven out of the 13 men murdered since May 2009.The weapons were identified through analysing unique markings on shell casings and bullets found at the scenes of crimes, which can trace the ammunition back to a specific gun.That means police know which weapons felled Kenwandee Robinson, Shane Minors, Perry Puckerin Jr, Dekimo Martin, Frederick Maybury and Colford Ferguson, but the killers and their guns remain at large.A seventh murder case, the death of Kumi Harford in December 2009, resulted in Antonio Myers being convicted on Monday. But the trial heard the two firearms used against Mr Harford have not been found, and neither has Myers’ accomplice in the crime.Police gang expert Alexander Rollin told the trial that gang members have been sharing weapons, which are kept in hiding places known to the gangs, as they do not have access to multiple weapons.Asked about police efforts to trace these guns, Assistant Commissioner David Mirfield said: “The Bermuda Police Service recovered nine firearms in 2010 including two air pistols, and one imitation firearm.“In 2011, two firearms have been recovered. These have been recovered from a number of locations of differing varieties.“The firearms recovered included 9mm pistols, revolvers, and even a Kiel AP-9 which resembles a machine gun.“While it is true that information from the public relating to the location of firearms is limited some recoveries have come about from such information.“Anonymous sources such as Crime Stoppers is an extremely valuable method and we encourage its use, however many of these recoveries have resulted from investigative efforts.”He explained: “This is largely attributable to the fact that these firearms are in possession of gang members who keep the location of guns within a very small circle of trusted people.“However, there will often be people who may be privy to this information, but don’t know who they can trust.“If there are any people who know the whereabouts of firearms or know people that may have possession of a gun, then they can call the Police or Crime Stoppers, where this information will be dealt with in the strictest confidence.”l The anonymous and confidential Crime Stoppers hotline can be reached on 800-8477 and the Serious Crime Unit on 295-0011.