The Lee–Metford is a British bolt action rifle. It was the first British Bolt-action rifle and combined James Paris Lee's rear-locking bolt system and detachable magazine with an innovative seven-groove rifled barrel designed by William Ellis Metford. It replaced the Martini–Henry as the standard service rifle of the British Empire in 1888, following nine years of development and trials, but remained in service for only a short time until replaced by the Lee–Enfield.