Both the Hancock and Liberty sold by woodcraft are made by Lazerlinez. You can also by them off his Web site. As silverado said the Marksman is USA made also, Not sure if Lazerlinez still make those for Marksman or not. I know he did at one time. They are all Great kits.
I have made several of the ones from both lazerlinez and from woodcraft they are the exact same hardware and very nice. I use them all the time for my upper end pens.