The 4-barrelled 1” Nordenfelt machine gun was used by the Royal Navy from the early 1870’s to the mid 1880’s as an anti-torpedo boat gun.
The gun fired a 1” diameter solid steel bullet with hardened tip and brass jacket capable of destroying attacking torpedo boats. With four 56 ½” long barrels The ammunition was fed from a hopper above the breech. It was fired by moving a lever on the right side of the gun forward and backwards. Pushing the lever forward loaded the cartridges, the last part of the forward push fired the gun one barrel at a time in quick succession. When the lever was pulled back it extracted the empty cases. The barrels were rifled with eleven shallow grooves and having blade fore-sights and adjustable rear-sights. It was superseded by larger calibre guns in the mid 1880’s
In a London auction in 2014, a 1″ Nordenfelt machine gun was sold for £85,500 ($142,379)
This example is on show at the Royal Armouries Museum, Leeds
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