"You can use MP7 as tank solvent"...right after you win the lottery!
Pretty rich, especially in a bigger tank! What I'm doing right now, which takes enough time that it almost defeats part of the purpose of a US cleaner, is a bath in Simple Green (which is already getting pretty ugly looking!) to cut the grease, oil and crud, then another bath in a cleaner designed for US tanks to really clean the gun (or whatever), then a final bath in really warm water to get the gun clean. I am doing the water rinse since I did a carburetor, set it out to dry overnight, and found a little white residue here and there from the US cleaner, even though I thought I'd rinsed it very thoroughly. Use a hairdryer or heat gun afterward to make sure all the corners, etc., get dry.
Why the US cleaning solution? I've read some stuff (not advertising material, either
) that said that a good cleaning solution will have chemicals in it that promote the cavitation (bubble action) that makes the US tank work best.
As far as lubing a revolver goes, you can take the sideplate off -- probably should, although after a while you're going to be able to tell, even if you're very careful removing it. The other alternative would be basically to take something like a spray CLP and spray enough in from various angles that you've doused the inside then put it somewhere to drain or blow some compressed air into the action. That would be important, since you don't want lube in the ammo (or on your clothes). The other side of that is that I took a revolver apart after I'd dripped lube in without taking the sideplate off once, out of curiosity, and was surprised to see how many of the friction surfaces had no oil on them, so I think you really need to do something that makes sure everything gets appropriately (lightly) lubed and is not running dry.