Well, I have one but it isn't NSW....it's one I got from Curly Gostomsky back in 1982. I really can't remember much about the building part, but seem to recall it wasn't a typical "kit" where you just screw parts together and apply finish. I do remember that there were NO instructions whatsoever, not even a picture of the completed gun. Of course, the price was a bit less back then.....