Hi, forgive my ignorance, but what is a McSwirley? I am / was an old school blue and wood guy, but Ive gotten older, wimpier and less obsessive with gun cleaning, so, I am interested. I see cerakote word thrown around a lot, is that what Mc Swirleys are? I admit I like the pics and would like to design my own. Do they protect from weather? Do you do it yourself? Would it go good on a ruger american rifle? Thanks any wisdom is much appreciated.