Lee Enfield jungle carbine won't feed from magazine

[Claven2]

before you do much else, load the mag out of the gun alternately with both 3 and 4 cartridges, press down on the top cartridge with each number of shells a few times. See if the back of the follower fails to push the rounds up into contact with the rear feed lips. Sometimes the followers can stick in the mags - there can be a few causes - a compressed mag spring that's not providing enough force, a mag body that's compressed too narrow, a deformed follower, or a missing front cartridge guide clip.