The 1911 but that's irrelevant. Internally there's a couple of bits that need to be rounded. It's not rocket science for the manufacturers. They're just cloning the TM which is already a very good working design.
Met, I've heard mixed things about them. a few guys say they are pretty good, but they say that they are very much a "my first gbb". For not a lot more, you can get all sorts of stuff from WE
