AR and 1911 parts have become commodity items. They’re so modular that putting together a custom weapon is only a challenge for enthusiasts who can’t assemble a Lego Batman. All you really need to cobble together an AR or a JMB .45 is a Brownell’s bookmark on your browser, a clean, well-lighted place to work, some YouTube instruction and a credit card with enough headroom. Meanwhile, civilians in “developing” nations (i.e. countries where civilian gun ownership is prohibitively expensive or just plain prohibited) are building something a little more…primitive. From scratch. Needless to say, America has an underground movement (with thousands of websites) celebrating amateur American DIY gunsmiths who roll their own. Perhaps our Armed Intelligentsia would like to give it a whirl. Or already have. If so, links please. If not, those of you with kids facing high school science projects are on notice.