I'm wondering if the oil/grease that the RIA guns ship from the factory in, does it turn rust color when it dries? Kind of brownish red? I'm wondering because I have a RIA A2 GI stored from several years ago. The other day I took a peek at it and it still has the original gun oil, which looks kind of brownish but still liquid, but I looked inside the barrel and it's completely brownish red all to the end. I scrubbed it and it wasn't liquid, and didn't come off.