No, but considering every single other Beta he has listed shows country of origin as China, his own Kickstarter indicates they're produced in China, and all other reviews out there of the flashlight indicate they're made in China, I think it's safe to assume that one is also made in China. It's likely an oversight on the page. But, if you'd like to contact him and verify, and you find out that the only Beta completely made in-house by Prometheus happens to be the copper one, I'll eat a hat.
I really don't understand why you're so desperate to find some information that these flashlights aren't made in China. Either way, this drop is for the electroless nickel and HAIII Black versions, which are shown on his site to be....wait for it....made in China.
To reiterate, I'm not saying "made in China" is a bad thing. I'm saying this is a mediocre flashlight for the money, and there are better options out there (unless you REALLY love the Quick Release mechanism). I think some brands like to put out slick-looking marketing wank - and, while not explicitly stated - try to get the viewer to assume their product is the product of one guy hunched over his tools in "good ole' USA".
What's great about Massdrop as a purchasing platform is you can be sure someone will call you out on your BS, and even get into discussions about supply chain, manufacturing, logistics, etc. Especially in today's media-saturated society, where it's easy to pump out good looking PR.