Number 4 and Number 5 (rifle and Jungle Carbine) are mechanically identical, apart from rearsight graduations.
Number 1, the old SMLE, was mechanically very similar. Most differences are in the stocking-up. Operation is almost identical.
Number 7 is simply a .22RF version of the Number 4, with 95% parts identity; likewise, Number 2 is a .22RF version of the Number 1.
The only fly in the ointment is the Number 3 (Pattern 1914) which is actually a MAUSER.
What you NEED is my old RSM for an afternoon, but I suspect he is long-gone to that Great Parade-ground in the Sky. So we find MANUALS for you.
Zip on over to milsurp dot com and take out a (free) membership. Get into their Lee-Enfield Military Knowledge Library and start pillaging the goodies. They have an entire LIBRARY which you can download, free.
Start with your own copy of SHOOT TO LIVE, which is the Canadian manual on shooting with the Number 4 Rifle. There is NO better book on basic rifle marksmanship.
Next, grab a copy of RIFLE - 1942.
For a basic history of the design, production and development, get Major EGB Reynolds' THE LEE-ENFIELD RIFLE (1960). This book was written before the documentation was shredded and ha a wealth of hard-to-find knowledge.
They also have training films, monographs, armourers' instructions and manuals: everything you will ever need to know.
After that, you can start on a set of the Ian Skennerton books, which are exhaustive at the very least and superbly illustrated.
Hope this helps.
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