Anyone recommend how often to clean them? I have couple of buddies that will not go without cleaning after every use. Clean and oil. I have a 4 year old that I don't want to find out I own a gun. So in other words I don't want to bust out my gun and clean it in front of him. I bought mine brand new a month ago. I just recently put 150 rounds through it. I feel clean after every use is excessive. Any thoughts?