If it aint broke, dont fix it.

You could 'upset' all sorts of things by dissasembling, the only thing you need to take out is the bolt, everything else can be cleaned (as Villiers says) with 4x2 and a pull thru'.

At some stage you may want to take the bolt apart ( but why would you ?) for which you will need a firing pin removal tool.

Something I found useful was a "range emergency breakdown kit"

Get one of the Enfiled oil bottles (that fit in the Butt trap), remove the 'spoon'.
Get hold of a spare extractor, extractor spring, and extractor screw and a small jewellers screwdriver (that fits the extractor screw), and a broken case extractor, these should all fit into the oil bottle.
There you have it - the two most common Enfield problems can now be fixed 'on site'.

(The spare extractor screw is because you will lose the one that you take out of the bolt head)