History of the Metropolitan Police Service by the end of the 19th century. During the 1860s, the flintlock pistols that had been purchased in 1829 were decommissioned from service, being superseded by 622 Beaumont–Adams revolvers firing the .450 cartridge which were loaned from the army stores at the Tower of London following the Clerkenwell bombing. In 1883, a ballot was carried out to gather information on officers' views on whether they wished to be armed, and 4,430 out of 6,325 officers serving on outer divisions requested to be issued with revolvers. The now obsolete Adams revolver was returned to stores for emergencies, and the Bulldog 'Metropolitan
Police uniforms and equipment in the United Kingdom end of the shift. In an emergency, duty bands could also be issued as the sole item of uniform if large numbers of special constables were required. The City of London Police are the last force to retain the duty band. In 1863, the Metropolitan Police replaced the tailcoat with a tunic, still high-collared, and the top hat with the custodian helmet, which is based on the Pickelhaube. With a few exceptions (including the City of London Police, West Mercia Police, Hampshire Constabulary and States of Guernsey Police Service), most forces helmet plates carry a Brunswick star. The helmet itself