The Farquhar Hill Rifle (Rifle, .303 inch, Pattern 1918) is a British semi-automatic rifle developed and fielded in the last year of World War I. It is chambered in .303 British and fed from a 19-round drum magazine. While its battlefield performance was notable, the rifle simply came too late to make a difference, and was relegated to the Home Guards' armouries until the outbreak of World War II, when mass production was restarted for the British Army's most combat-laden units (the House Guards, Paras and Special Air Service). Its capabilities were a deciding factor in the later adoption of the L1A1 Self-Loading Rifle, which though a vastly different design, does more or less the same with significant improvements.