Oct 22, 2020 · The Lee–Enfield is a bolt-action, magazine-fed, repeating rifle that served as the main firearm used by the military forces of the British Empire and Commonwealth during the first half of the 20th century. It was the British Army's standard rifle from its official adoption in 1895 until 1957. Markings on Lee Enfield rifles and equipment Cartridges, Bayonets, Oilers, Bore Viewers, Brass Disc Info, Rifles, Slings, Nuts and Bolt Threads, Lee Enfield screw and bolt sizes; https://www.enfield-rifles.com/screw-and-bolt-sizes-for-the-enfield_topic3330.html; …….. Threads used on Lee Enfield rifles.UK
The .303 Lee-Enfield rifle is really a series of rifles. There are 13 incarnations of the weapon that span the 20th century and saw service in two world wars and throughout the British Empire, including dozens of variants in carbine length, different calibers and even a suppressed model for special operations.
The crux of the No. 4 Lee-Enfield story is it was Great Britain’s supremely practical evolution of the most promising of the world’s first-generation, small-bore, smokeless powder, bolt-action repeating-rifles (their own Lee-Metford) and the best battle rifle of World War I, the Short Magazine Lee-Enfield (SMLE) No. 1 Mk 3.