The construction of the knife is different than I have seen before. It was one of the reasons I purchased the knife was to figure out how it worked. The back spacer has two internal pins that go through the spacer into the frame/scales holding it stationary. The scales are held together and in place by the pocket clip and the glass breaker. The glass breaker has a threaded post which goes through the clip and into the back spacer. When tightened down there is no movement or play in the clip, spacer or frame. There are no visible screws on the knife but the pivot and the screw holding the SS insert/overtravel stop. I am unclear how the thumb stud is attached.
That Brian Nadeau Typhoon is a beautiful knife. I had never seen it before. There are Brian Nadeau Typhoons I found when I searched, that I like even better than the one pictured, that man has talent, but in this case I don't believe it was copied. Tyler's definition of "blatant knockoff" is different than mine. It still wouldn't surprise me to have someone post something that it actually looks like, there are only so many ways to make a knife, but I couldn't find it prior to purchase and I made a significant effort. Because of it unique construction I felt there had to be another out there.