2. Lee Enfield
Widely used by the British Empire and Commonwealth military forces as their main firearm in the early 20th century, Lee-Enfield is a bolt-action, magazine-fed, repeating rifle. It served as the standard rifle for the British Army from 1895 (its official adoption date) until 1957. Britain adopted a redesign of the Lee-Metford in 1888 to create the Lee-Enfield, which superseded the earlier Martini-Enfield, Martini-Henry and Lee-Metford rifles.
This infantry rifle is still used by the armed forces of some Commonwealth nations, particularly the Bangladesh Police. As such, it is the longest-serving military bolt-action rifle still featuring in official service to date.