The Pattern 1913 bayonet was designed to be used with the experimental Pattern 1913 Enfield. The Pattern 1913 bayonet's only functional difference from the Pattern 1907 bayonet was a longer cross guard for the muzzle ring, to fit the Pattern 1913 Enfield rifle. Upon the outbreak of World War I the British authorities adapted the Pattern 1913 Enfield to the .303 British cartridge, creating the Pattern 1914 Enfield rifle, and contracts were awarded to the United States arms manufacturers Winchester, Remington and Eddystone for the rifle's production. To accompany those rifles, Remington manufactured the 1,243,000 Pattern 1913 bayonets and Winchester produced 225,000.
The Pattern 1917 bayonet cannot be fixed to the Lee-Enfield rifle (because of the different muzzle ring heights), so to avoid confusion with the Pattern 1907 bayonet, two deep vertical grooves were cut into the wooden grips of the Pattern 1913 bayonet.
This Particular bayonet is a british marked P13, in a US Scabbard.