I would like to introduce myself, being as this is my first post. I have been a long time troller of the site, and only found it prudent to register now that I have my clone ... i.e. something to talk about Anyway, I have put about 300 rounds through the weapon (about 200 less than Vectors suggested break-in time) and decided to disassemble the gun. The reason for doing so was because I wanted a better look at the slight discoloring within the magwell that I had noticed. When opened up I noticed that the inside of my upper reciever was all a goldish-brown hue (like rust). Now I know what rust looks like on a gun (don't let your friends borrow your AK to go shoot in the rain, and forget to clean it), but overall opinion is that it is not rust. Just wondering why the metal has this look to it, and if this is normal/common. Maybe someone wouldn't mind putting up a picture of their reciever for comparison. I would post picture, but I'm still trying to figure everything out. Excuse my ignorance.