If you decide to remove the buttstock & buttstock bolt, let me give you a a time saving tip...The Brits put a leather disk in some Enfields in the bolthole after installing the stock bolt. If yours is unmolested, it probably still has it. You can't get at the bolt until you pull it out. I could not understand why they put a leather disk in a stock without a quick-opening buttplate, but maybe just "we've always done it this way"...
I have/seen both hex head and screwdriver slotted stock bolts. If it's screwdriver slotted, a wrench on the biggest screwdriver that will fit is needed.
I've owned at least two of these, and another half dozen No4 rifles we converted to carbines. My first one was bought while I was still in the Corps and I could still shoot accurately. That OEM 1946 Enfield carbine shot better than my service Winchester M14.