I have a set of the "Duke" grips on a USFA. They are definitely more dense material than a lot of the plastic fake grips I've seen. One thing to note; If you have to do any sanding to fit the grips they are white under that aged yellow look. I can't remember if I sent him my grip frame or a tracing, but they fit perfectly on my gun. I talked to him on the phone a few times. Pretty good guy to deal with.
Dan
