History of the Lee-Enfield Rifle No. 5 Mk I (Jungle Carbine)
The
Lee-Enfield bolt-action rifle appeared in the UK in 1895 and became one of the classic service rifles of the time - alongside models such as the Russian Mosin-Nagant, the American Springfield M1903 and the German Mauser. The original version was called "MLE" by "Magazine Lee-Enfield", followed by "Short Magazine, Lee-Enfield" called "SMLE" in 1907, during the First World War (1914-1918 Years) performed well.
This line served on the front lines for decades, until World War II (1939-1945). By 1943, British authorities realized that their troops and Commonwealth forces fighting in the jungles of the Pacific and Southeast Asia needed a more compact weapon for use on the borders associated with jungle warfare. Full length rifle shape.
The inherent effective range it provides is of little use in areas where trees and mountains continue to disrupt the landscape - meaning more close-range combat can be expected. This led to the introduction in 1944 of a new model derived from the Lee-Enfield line - the "No.
5 Mk I Rifle", informally known as the "Jungle Carbine".
As a carbine, the No. 5 Carbine is nothing but an intentionally shortened version of the original long gun, in this case the Lee-Enfield No. 4 SMLE. The No. 5 was a replica of the No.
4 (including its British .303 rifle) in every way, except for the shortened barrel assembly, which in turn forced the use of a shorter nose. Since this shortening compromised the effective range of the original rifle design, the sights for the new carbine reels (up to 800 yards) were modified accordingly. Two more modifications followed - one with a tapered muzzle installed at the end of the barrel to serve as a "flash suppressor", and another with the addition of a padding to the shoulder rest.
The reduced length firearm still retains wild recoil. 303 wheels, so the pads should absorb some force before passing the rest to the operator.
Muzzle flashers were also introduced to hide the shooter's position - usually this muzzle flash was blocked by the longer barrel, but this was not the case with the modified jungle carbine.
In practice, the carbine was not entirely successful, as its operators were unaware of the still powerful recoil of their smaller, lighter guns - although instead they appreciated the more compact, Lighter form by jungle. There was also a problem with aiming the gun, for whatever reason, the gun couldn't keep its "zero" setting when fired afterwards, which ended up being inaccurate and inconsistent with the gun system. This ensures that the Jungle Carbine does not see long service life as a front-line solution, as it was at one point envisioned as the next standard service rifle for British Army personnel, succeeding Line 4.
One of the first users of the No. 5 Jungle Carbine was the British Army's 1st Airborne Division, which entered service in Europe in 1945. Post-war production continued until 1947, and since then the carbine has been in the hands of special forces.
Some still functioned during the Malayan Emergency (1948-1960) and the Korean War (1950-1953) following World War II operations.
The No. 5 Jungle Carbine has an overall weight of 7.15 lbs, a reduction in carry weight over the No. 4's 8.8 lbs, and an overall length of 39.5 inches, compared to the 44 inches seen on the original Lee-Enfield design. Muzzle velocity is roughly maintained at around 2,400 to 2,500 feet per second, fed from the same 10-round magazine.
303 imperial cartridge (2 x 5 rounds clip). The gun is manufactured by the Royal Small Arms Factory (RSAF) in Enfield Lock, Middlesex.
Specifications for Lee-Enfield Rifle No. 5 Mk I (Jungle Carbine)
Roles
- Close Combat (CQB) / Personal Protection
- Manual Repeat Shot
Dimensions
1,003 mm (39.49 in)
477 mm (18.78 in)
3.20 kg
Flip type rear fixed front pillar.
Performance
Manual bolt action; repeated fire
2,540 ft/s (774 m/s)
25 rounds per minute
1,640 ft (500 m; 547 yd)
Changes
Rifle #4 - Base series designation; based on the Lee-Enfield No. 4 Mk I service rifle.
Rifle #4 Mk I - Basic Production Model
Rifle No. 6 Mk I - Experimental development by the Australian Army using the Lee-Enfield SMLE Mk III* line of rifles.



