2019. It sparked lengthy debate about gun control, as Gray's primary weapon was a Norinco 84S 5.56mm semi-automatic rifle which had a similar appearance to and internal mechanism based on the Russian AK-47 assault rifle, and he owned three other semi-automatic firearms. Four of the dead victims and one of the injured were proven forensically to have been shot with the Norinco rifle, and another of the injured had been shot with Gray's .22 cal Squires Bingham rifle. Fragments recovered from other victims did not lead to an identification of the weapon. The incident directly resulted in an amendment to New Zealand's firearms legislation in 1992, tightening gun control and the creation of the military-style semi-automatic category of firearms. Bravery awards A number of those involved received bravery awards: George Cross – Sergeant Stewart Guthrie (posthumous); George Medal – Mrs Eva Helen Dickson; Queen's Gallantry Medal – Victor James Crimp QSM (posthumous), Constable Don Nicholas Fraser Harvey, Detective Paul Alan Knox, Constable Terry Edward Van Turnhout, Senior Constable David Thomas Weir; Queen's Commendation for Brave Conduct – Sergeant Michael Arthur Kyne, Constable Timothy Philip Ashton, Constable Robert William Barlass, Constable Peter Gerard McCarthy, Chiquita Danielle Holden. Police commendations In addition, a number of police officers who were involved in the incident received internal police merit awards. Gold Merit Award – Inspector Murray James Forbes (forward commander of the two anti-terrorist squads), Detective Stephen Patrick Vaughan; Certificate of Appreciation – Detective Sergeant Brian Keith Woodcock (squad leader), Constable Gregory James Cummings, Constable Michael Lyn Rusbatch (squad members). Memorials A memorial to the victims was erected in the township. A memorial to Sergeant Stewart Guthrie was erected at Dunedin Police Station. His name was also added to the memorial wall at the Royal New Zealand Police College and a memorial tribute published on the police website. Police and the Police Museum also mourn Sergeant Guthrie's death by issuing statements upon its anniversary. Subsequent events In 2009, Mrs Dickson's George Medal was thought to have been stolen from a museum, as it could not be found. After the theft began circulating on the news and social media, it was found the following year in a cupboard in the museum where it had been stored and poorly catalogued. In February 2018, relatives sold the George Cross awarded to Sergeant Stewart Guthrie to Lord Ashcroft. The Ministry of Culture and Heritage was criticised for approving