Live steam or hot, hot water...
Okay. Your wife's away for the day... Go crank your water heater from "child safe" up to "scald."
Go steal the strainer from her kitchen. Preferably one with teeny tiny holes that she just uses for lettuce and stuff that you don't eat.
Take all the small and teeny tiny parts, and put them in the strainer. Put the strainer in a pan of boiling water. Agitate (which she'll be if she catches you). Put the parts on a few paper towels, and IMMEDIATELY use a light oil on them.
Now you should just have the receiver, the barrel, and the stock. If you've got anything that'll fit in the strainer, go do that again, Homer...
Now, after your water heater has done its thing, put the stock and barreled action in the shower. Using that flexible shower massager dealie, and just hot water, start spraying. Now turn the exhaust fan on so you can see. Do not spray yourself. That crap's hot! You're going to want to do this for a while...
Then take it all out, oil it lightly IMMEDIATELY, and clean the shower before you get caught. Go turn down the water heater.