Remember, just because these guns aren't real, doesn't mean they don't need maintenance. Most of the time light Oil, BUT NOT WD-40, is all these guns need. Many of them should not ever be disassembled. Light Oil, and white lithium grease is a good way to go! All metal on metal parts work better together after a period of mutual wear, but too much wear can ruin a guns action. Light Oil and Lithium grease will help keep your replica weapon factory fresh for many many years.
