I just finished cleaning two new mini 14s that I purchased for my son and myself. The preservative they put on the rifles is like extra thick oil, and there is so much of it I am not surprised by stories online from people who took their new gun to the range and had all sorts of issues. I am surprised that they do not fly apart. If you work the action before you clean it and after a thorough cleaning and light lubrication, you can tell right away especially side by side with the uncleaned one. This is why I keep brake cleaner on hand it makes quick work of oil and grease on metal parts. Finish with a light coat of Hoppes 9
on a rag and it just feels right. The last time I had a gun with so much stuff on it was a Garand caked with cosmoline. However I am now expecting the guns to work flawlessly.