When someone asks about "wet" I think of the guys I see sometimes at the Club who have obviously slathered the entire bolt carrier and charge handle.

IMO, using a quality lube that does a decent job of staying in place where it's needed is prefered to dunking the rifle in a drum of oil.

I use Wilson Combat Universal. When it gets below freezing I use their regular oil. I don't lubricate the chrome silicon buffer spring.