Another thing I really like about Glocks.
When I did carry a blued .38sp, had to hit that little booger with an oil damp rag after every handling.
My G27 gets nothing after handling and still looks like the day I bought it. The only oil it gets is after a cleaning if it's cycled a few hundred rounds. Cleaning is just a dry toothbrushing to knock off dry powder in the action. Oil only on barrel and the few Glock recommended lube spots.