[/FONT]The old traditional method of cleaning a gun after firing corrosive ammo was to thoroughly scrub the bolt, barrel, and gas system with HOT soapy water (just like black powder shooters), then dry it all out and administer a light coat of preservative oil to the clean gun. This method is extremely cheap, reliable, and effective.
The correct way is to use boiling hot soapy water. A one or two gallon pail works well. Field strip, put loose parts in pail to soak. Immerse receiver in solution and scrub the bore and chamber with a brush and solid rod, using a muzzle protector. Remove the gas plug, immerse the gas cylinder and muzzle (but not the handguard) and swab the cylinder bore with a brush. Repeat in boiling hot 'rinse' water with a few drops of oil on the surface. Clean the residue from the small parts and the recessses of the receiver with an old toothbrush. Use Hot water and latex gloves to protect your hands. The hot water evaporates quickly, and WD-40 can be used to displace moisture from the rear sight and the bolt extractor without disassembly. Swab the bore with an oily patch, then use it to go over all parts. Grease and reassemble.
Resourceful GI's could bathe, shave, clean the M1 and their socks in a helmet of boiling water.