Ruger has been using investment casting for years without problems. I can only assume they have marks (circles, lines, etc) on the parts unless polished off. http://www.ruger.com/casting/index.html If I was in the market for a 1911 in that price range I would not hesitate to buy a Ruger. It looks like a very nice addition to the 1911 market. I imagine they will sell a ton of them. Congrats on a nice pistola.