The Lee-Enfield was, in various marks and models, the British Army's standard bolt-action, magazine-fed, repeating rifle for over 60 years from (officially) 1895 until 1957, although it remained in British service well into the early 1960s and is still found in service in the armed forces of some Commonwealth nations. In its many versions, it was the standard army service rifle for the first half of the 20th century, and was adopted by Britain's colonies and Commonwealth allies, including India, Australia, New Zealand, and Canada.
The Lee-Enfield was chambered for the .303 British cartridge, and featured a ten-round box magazine which was loaded manually from the top, either one round at a time, or by means of five-round chargers. The Lee-Enfield superseded the earlier Martini-Henry, Martini-Enfield, and Lee-Metford rifles, and although officially replaced in the UK with the L1A1 SLR in 1957, it continues to see official service in a number of British Commonwealth nations to the present day—notably with the Indian Police—and is the longest-serving military bolt-action rifle still in official service.
Total production of all Lee-Enfields is estimated at over 17 million rifles, making it one of the most numerous military bolt-action rifles ever produced—second only to the Russian Mosin-Nagant M91/30, which was itself a contemporary design.