Interesting question Eric. To me an unfired Luger only needs to be wiped off with a lightly oiled rag every now and then, probably annually unless you are in high humidity. I'd push a well oiled patch down the barrel every few years. To me excessive disassembly probably creates more hazards than it fixes. I'd not hesitate to use an aluminum cleaning rod from the muzzle, but carefully and maybe with a bore guide. One pass or 2 should do it.
Of course you being in Florida may create cleaning needs that I am overlooking.
I agree with Bill on WD-40. It's not the Devil's potion as some claim, but there are better oils out there.
dju
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